254901920

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1$

素因数の和:144

約数の個数: 288

約数和(自身を含む): 785480976

約数和(自身を除く): 530579056

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 32, 35, 40, 41, 49, 52, 56, 61, 65, 70, 80, 82, 91, 98, 104, 112, 122, 130, 140, 160, 164, 182, 196, 205, 208, 224, 244, 245, 260, 280, 287, 305, 328, 364, 392, 410, 416, 427, 455, 488, 490, 520, 533, 560, 574, 610, 637, 656, 728, 784, 793, 820, 854, 910, 976, 980, 1040, 1066, 1120, 1148, 1220, 1274, 1312, 1435, 1456, 1568, 1586, 1640, 1708, 1820, 1952, 1960, 2009, 2080, 2132, 2135, 2296, 2440, 2501, 2548, 2665, 2870, 2912, 2989, 3172, 3185, 3280, 3416, 3640, 3731, 3920, 3965, 4018, 4264, 4270, 4592, 4880, 5002, 5096, 5330, 5551, 5740, 5978, 6344, 6370, 6560, 6832, 7280, 7462, 7840, 7930, 8036, 8528, 8540, 9184, 9760, 10004, 10045, 10192, 10660, 11102, 11480, 11956, 12505, 12688, 12740, 13664, 14560, 14924, 14945, 15860, 16072, 17056, 17080, 17507, 18655, 20008, 20090, 20384, 21320, 22204, 22960, 23912, 25010, 25376, 25480, 26117, 27755, 29848, 29890, 31720, 32144, 32513, 34160, 35014, 37310, 38857, 40016, 40180, 42640, 44408, 45920, 47824, 50020, 50960, 52234, 55510, 59696, 59780, 63440, 64288, 65026, 68320, 70028, 74620, 77714, 80032, 80360, 85280, 87535, 88816, 95648, 100040, 101920, 104468, 111020, 119392, 119560, 122549, 126880, 130052, 130585, 140056, 149240, 155428, 160720, 162565, 175070, 177632, 194285, 200080, 208936, 222040, 227591, 239120, 245098, 260104, 261170, 280112, 298480, 310856, 321440, 325130, 350140, 388570, 400160, 417872, 444080, 455182, 478240, 490196, 520208, 522340, 560224, 596960, 612745, 621712, 650260, 700280, 777140, 835744, 888160, 910364, 980392, 1040416, 1044680, 1137955, 1225490, 1243424, 1300520, 1400560, 1554280, 1593137, 1820728, 1960784, 2089360, 2275910, 2450980, 2601040, 2801120, 3108560, 3186274, 3641456, 3921568, 4178720, 4551820, 4901960, 5202080, 6217120, 6372548, 7282912, 7965685, 9103640, 9803920, 12745096, 15931370, 18207280, 19607840, 25490192, 31862740, 36414560, 50980384, 63725480, 127450960, 254901920]

約数ペア:

[(1, 254901920), (2, 127450960), (4, 63725480), (5, 50980384), (7, 36414560), (8, 31862740), (10, 25490192), (13, 19607840), (14, 18207280), (16, 15931370), (20, 12745096), (26, 9803920), (28, 9103640), (32, 7965685), (35, 7282912), (40, 6372548), (41, 6217120), (49, 5202080), (52, 4901960), (56, 4551820), (61, 4178720), (65, 3921568), (70, 3641456), (80, 3186274), (82, 3108560), (91, 2801120), (98, 2601040), (104, 2450980), (112, 2275910), (122, 2089360), (130, 1960784), (140, 1820728), (160, 1593137), (164, 1554280), (182, 1400560), (196, 1300520), (205, 1243424), (208, 1225490), (224, 1137955), (244, 1044680), (245, 1040416), (260, 980392), (280, 910364), (287, 888160), (305, 835744), (328, 777140), (364, 700280), (392, 650260), (410, 621712), (416, 612745), (427, 596960), (455, 560224), (488, 522340), (490, 520208), (520, 490196), (533, 478240), (560, 455182), (574, 444080), (610, 417872), (637, 400160), (656, 388570), (728, 350140), (784, 325130), (793, 321440), (820, 310856), (854, 298480), (910, 280112), (976, 261170), (980, 260104), (1040, 245098), (1066, 239120), (1120, 227591), (1148, 222040), (1220, 208936), (1274, 200080), (1312, 194285), (1435, 177632), (1456, 175070), (1568, 162565), (1586, 160720), (1640, 155428), (1708, 149240), (1820, 140056), (1952, 130585), (1960, 130052), (2009, 126880), (2080, 122549), (2132, 119560), (2135, 119392), (2296, 111020), (2440, 104468), (2501, 101920), (2548, 100040), (2665, 95648), (2870, 88816), (2912, 87535), (2989, 85280), (3172, 80360), (3185, 80032), (3280, 77714), (3416, 74620), (3640, 70028), (3731, 68320), (3920, 65026), (3965, 64288), (4018, 63440), (4264, 59780), (4270, 59696), (4592, 55510), (4880, 52234), (5002, 50960), (5096, 50020), (5330, 47824), (5551, 45920), (5740, 44408), (5978, 42640), (6344, 40180), (6370, 40016), (6560, 38857), (6832, 37310), (7280, 35014), (7462, 34160), (7840, 32513), (7930, 32144), (8036, 31720), (8528, 29890), (8540, 29848), (9184, 27755), (9760, 26117), (10004, 25480), (10045, 25376), (10192, 25010), (10660, 23912), (11102, 22960), (11480, 22204), (11956, 21320), (12505, 20384), (12688, 20090), (12740, 20008), (13664, 18655), (14560, 17507), (14924, 17080), (14945, 17056), (15860, 16072)]