400201360

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{4871}}^1$

素因数の和:4976

約数の個数: 80

約数和(自身を含む): 1014935040

約数和(自身を除く): 614733680

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 79, 80, 104, 130, 158, 208, 260, 316, 395, 520, 632, 790, 1027, 1040, 1264, 1580, 2054, 3160, 4108, 4871, 5135, 6320, 8216, 9742, 10270, 16432, 19484, 20540, 24355, 38968, 41080, 48710, 63323, 77936, 82160, 97420, 126646, 194840, 253292, 316615, 384809, 389680, 506584, 633230, 769618, 1013168, 1266460, 1539236, 1924045, 2532920, 3078472, 3848090, 5002517, 5065840, 6156944, 7696180, 10005034, 15392360, 20010068, 25012585, 30784720, 40020136, 50025170, 80040272, 100050340, 200100680, 400201360]

約数ペア:

[(1, 400201360), (2, 200100680), (4, 100050340), (5, 80040272), (8, 50025170), (10, 40020136), (13, 30784720), (16, 25012585), (20, 20010068), (26, 15392360), (40, 10005034), (52, 7696180), (65, 6156944), (79, 5065840), (80, 5002517), (104, 3848090), (130, 3078472), (158, 2532920), (208, 1924045), (260, 1539236), (316, 1266460), (395, 1013168), (520, 769618), (632, 633230), (790, 506584), (1027, 389680), (1040, 384809), (1264, 316615), (1580, 253292), (2054, 194840), (3160, 126646), (4108, 97420), (4871, 82160), (5135, 77936), (6320, 63323), (8216, 48710), (9742, 41080), (10270, 38968), (16432, 24355), (19484, 20540)]