280757360

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{499}}^1\times {\mathrm{541}}^1$

素因数の和:1066

約数の個数: 80

約数和(自身を含む): 705684000

約数和(自身を除く): 424926640

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 499, 520, 541, 998, 1040, 1082, 1996, 2164, 2495, 2705, 3992, 4328, 4990, 5410, 6487, 7033, 7984, 8656, 9980, 10820, 12974, 14066, 19960, 21640, 25948, 28132, 32435, 35165, 39920, 43280, 51896, 56264, 64870, 70330, 103792, 112528, 129740, 140660, 259480, 269959, 281320, 518960, 539918, 562640, 1079836, 1349795, 2159672, 2699590, 3509467, 4319344, 5399180, 7018934, 10798360, 14037868, 17547335, 21596720, 28075736, 35094670, 56151472, 70189340, 140378680, 280757360]

約数ペア:

[(1, 280757360), (2, 140378680), (4, 70189340), (5, 56151472), (8, 35094670), (10, 28075736), (13, 21596720), (16, 17547335), (20, 14037868), (26, 10798360), (40, 7018934), (52, 5399180), (65, 4319344), (80, 3509467), (104, 2699590), (130, 2159672), (208, 1349795), (260, 1079836), (499, 562640), (520, 539918), (541, 518960), (998, 281320), (1040, 269959), (1082, 259480), (1996, 140660), (2164, 129740), (2495, 112528), (2705, 103792), (3992, 70330), (4328, 64870), (4990, 56264), (5410, 51896), (6487, 43280), (7033, 39920), (7984, 35165), (8656, 32435), (9980, 28132), (10820, 25948), (12974, 21640), (14066, 19960)]