205490320

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1$

素因数の和:166

約数の個数: 240

約数和(自身を含む): 610675200

約数和(自身を除く): 405184880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 19, 20, 28, 31, 35, 38, 40, 49, 56, 62, 70, 76, 80, 89, 95, 98, 112, 124, 133, 140, 152, 155, 178, 190, 196, 217, 245, 248, 266, 280, 304, 310, 356, 380, 392, 434, 445, 490, 496, 532, 560, 589, 620, 623, 665, 712, 760, 784, 868, 890, 931, 980, 1064, 1085, 1178, 1240, 1246, 1330, 1424, 1519, 1520, 1691, 1736, 1780, 1862, 1960, 2128, 2170, 2356, 2480, 2492, 2660, 2759, 2945, 3038, 3115, 3382, 3472, 3560, 3724, 3920, 4123, 4340, 4361, 4655, 4712, 4984, 5320, 5518, 5890, 6076, 6230, 6764, 7120, 7448, 7595, 8246, 8455, 8680, 8722, 9310, 9424, 9968, 10640, 11036, 11780, 11837, 12152, 12460, 13528, 13795, 14896, 15190, 16492, 16910, 17360, 17444, 18620, 19313, 20615, 21805, 22072, 23560, 23674, 24304, 24920, 27056, 27590, 28861, 30380, 32984, 33820, 34888, 37240, 38626, 41230, 43610, 44144, 47120, 47348, 49840, 52421, 55180, 57722, 59185, 60760, 65968, 67640, 69776, 74480, 77252, 82460, 82859, 87220, 94696, 96565, 104842, 110360, 115444, 118370, 121520, 135191, 135280, 144305, 154504, 164920, 165718, 174440, 189392, 193130, 209684, 220720, 230888, 236740, 262105, 270382, 288610, 309008, 329840, 331436, 348880, 366947, 386260, 414295, 419368, 461776, 473480, 524210, 540764, 577220, 662872, 675955, 733894, 772520, 828590, 838736, 946960, 1048420, 1081528, 1154440, 1325744, 1351910, 1467788, 1545040, 1657180, 1834735, 2096840, 2163056, 2308880, 2568629, 2703820, 2935576, 3314360, 3669470, 4193680, 5137258, 5407640, 5871152, 6628720, 7338940, 10274516, 10815280, 12843145, 14677880, 20549032, 25686290, 29355760, 41098064, 51372580, 102745160, 205490320]

約数ペア:

[(1, 205490320), (2, 102745160), (4, 51372580), (5, 41098064), (7, 29355760), (8, 25686290), (10, 20549032), (14, 14677880), (16, 12843145), (19, 10815280), (20, 10274516), (28, 7338940), (31, 6628720), (35, 5871152), (38, 5407640), (40, 5137258), (49, 4193680), (56, 3669470), (62, 3314360), (70, 2935576), (76, 2703820), (80, 2568629), (89, 2308880), (95, 2163056), (98, 2096840), (112, 1834735), (124, 1657180), (133, 1545040), (140, 1467788), (152, 1351910), (155, 1325744), (178, 1154440), (190, 1081528), (196, 1048420), (217, 946960), (245, 838736), (248, 828590), (266, 772520), (280, 733894), (304, 675955), (310, 662872), (356, 577220), (380, 540764), (392, 524210), (434, 473480), (445, 461776), (490, 419368), (496, 414295), (532, 386260), (560, 366947), (589, 348880), (620, 331436), (623, 329840), (665, 309008), (712, 288610), (760, 270382), (784, 262105), (868, 236740), (890, 230888), (931, 220720), (980, 209684), (1064, 193130), (1085, 189392), (1178, 174440), (1240, 165718), (1246, 164920), (1330, 154504), (1424, 144305), (1519, 135280), (1520, 135191), (1691, 121520), (1736, 118370), (1780, 115444), (1862, 110360), (1960, 104842), (2128, 96565), (2170, 94696), (2356, 87220), (2480, 82859), (2492, 82460), (2660, 77252), (2759, 74480), (2945, 69776), (3038, 67640), (3115, 65968), (3382, 60760), (3472, 59185), (3560, 57722), (3724, 55180), (3920, 52421), (4123, 49840), (4340, 47348), (4361, 47120), (4655, 44144), (4712, 43610), (4984, 41230), (5320, 38626), (5518, 37240), (5890, 34888), (6076, 33820), (6230, 32984), (6764, 30380), (7120, 28861), (7448, 27590), (7595, 27056), (8246, 24920), (8455, 24304), (8680, 23674), (8722, 23560), (9310, 22072), (9424, 21805), (9968, 20615), (10640, 19313), (11036, 18620), (11780, 17444), (11837, 17360), (12152, 16910), (12460, 16492), (13528, 15190), (13795, 14896)]