641868640

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{139}}^1$

素因数の和:218

約数の個数: 288

約数和(自身を含む): 1930521600

約数和(自身を除く): 1288652960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 19, 20, 28, 31, 32, 35, 38, 40, 49, 56, 62, 70, 76, 80, 95, 98, 112, 124, 133, 139, 140, 152, 155, 160, 190, 196, 217, 224, 245, 248, 266, 278, 280, 304, 310, 380, 392, 434, 490, 496, 532, 556, 560, 589, 608, 620, 665, 695, 760, 784, 868, 931, 973, 980, 992, 1064, 1085, 1112, 1120, 1178, 1240, 1330, 1390, 1519, 1520, 1568, 1736, 1862, 1946, 1960, 2128, 2170, 2224, 2356, 2480, 2641, 2660, 2780, 2945, 3038, 3040, 3472, 3724, 3892, 3920, 4123, 4256, 4309, 4340, 4448, 4655, 4712, 4865, 4960, 5282, 5320, 5560, 5890, 6076, 6811, 6944, 7448, 7595, 7784, 7840, 8246, 8618, 8680, 9310, 9424, 9730, 10564, 10640, 11120, 11780, 12152, 13205, 13622, 14896, 15190, 15568, 16492, 17236, 17360, 18487, 18620, 18848, 19460, 20615, 21128, 21280, 21545, 22240, 23560, 24304, 26410, 27244, 28861, 29792, 30163, 30380, 31136, 32984, 34055, 34472, 34720, 36974, 37240, 38920, 41230, 42256, 43090, 47120, 48608, 52820, 54488, 57722, 60326, 60760, 65968, 68110, 68944, 73948, 74480, 77840, 81871, 82460, 84512, 86180, 92435, 94240, 105640, 108976, 115444, 120652, 121520, 129409, 131936, 136220, 137888, 144305, 147896, 148960, 150815, 155680, 163742, 164920, 172360, 184870, 211141, 211280, 217952, 230888, 241304, 243040, 258818, 272440, 288610, 295792, 301630, 327484, 329840, 344720, 369740, 409355, 422282, 422560, 461776, 482608, 517636, 544880, 573097, 577220, 591584, 603260, 647045, 654968, 659680, 689440, 739480, 818710, 844564, 923552, 965216, 1035272, 1055705, 1089760, 1146194, 1154440, 1206520, 1294090, 1309936, 1478960, 1637420, 1689128, 2070544, 2111410, 2292388, 2308880, 2413040, 2588180, 2619872, 2865485, 2957920, 3274840, 3378256, 4011679, 4141088, 4222820, 4584776, 4617760, 4826080, 5176360, 5730970, 6549680, 6756512, 8023358, 8445640, 9169552, 10352720, 11461940, 13099360, 16046716, 16891280, 18339104, 20058395, 20705440, 22923880, 32093432, 33782560, 40116790, 45847760, 64186864, 80233580, 91695520, 128373728, 160467160, 320934320, 641868640]

約数ペア:

[(1, 641868640), (2, 320934320), (4, 160467160), (5, 128373728), (7, 91695520), (8, 80233580), (10, 64186864), (14, 45847760), (16, 40116790), (19, 33782560), (20, 32093432), (28, 22923880), (31, 20705440), (32, 20058395), (35, 18339104), (38, 16891280), (40, 16046716), (49, 13099360), (56, 11461940), (62, 10352720), (70, 9169552), (76, 8445640), (80, 8023358), (95, 6756512), (98, 6549680), (112, 5730970), (124, 5176360), (133, 4826080), (139, 4617760), (140, 4584776), (152, 4222820), (155, 4141088), (160, 4011679), (190, 3378256), (196, 3274840), (217, 2957920), (224, 2865485), (245, 2619872), (248, 2588180), (266, 2413040), (278, 2308880), (280, 2292388), (304, 2111410), (310, 2070544), (380, 1689128), (392, 1637420), (434, 1478960), (490, 1309936), (496, 1294090), (532, 1206520), (556, 1154440), (560, 1146194), (589, 1089760), (608, 1055705), (620, 1035272), (665, 965216), (695, 923552), (760, 844564), (784, 818710), (868, 739480), (931, 689440), (973, 659680), (980, 654968), (992, 647045), (1064, 603260), (1085, 591584), (1112, 577220), (1120, 573097), (1178, 544880), (1240, 517636), (1330, 482608), (1390, 461776), (1519, 422560), (1520, 422282), (1568, 409355), (1736, 369740), (1862, 344720), (1946, 329840), (1960, 327484), (2128, 301630), (2170, 295792), (2224, 288610), (2356, 272440), (2480, 258818), (2641, 243040), (2660, 241304), (2780, 230888), (2945, 217952), (3038, 211280), (3040, 211141), (3472, 184870), (3724, 172360), (3892, 164920), (3920, 163742), (4123, 155680), (4256, 150815), (4309, 148960), (4340, 147896), (4448, 144305), (4655, 137888), (4712, 136220), (4865, 131936), (4960, 129409), (5282, 121520), (5320, 120652), (5560, 115444), (5890, 108976), (6076, 105640), (6811, 94240), (6944, 92435), (7448, 86180), (7595, 84512), (7784, 82460), (7840, 81871), (8246, 77840), (8618, 74480), (8680, 73948), (9310, 68944), (9424, 68110), (9730, 65968), (10564, 60760), (10640, 60326), (11120, 57722), (11780, 54488), (12152, 52820), (13205, 48608), (13622, 47120), (14896, 43090), (15190, 42256), (15568, 41230), (16492, 38920), (17236, 37240), (17360, 36974), (18487, 34720), (18620, 34472), (18848, 34055), (19460, 32984), (20615, 31136), (21128, 30380), (21280, 30163), (21545, 29792), (22240, 28861), (23560, 27244), (24304, 26410)]