77828080

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{1499}}^1$

素因数の和:1582

約数の個数: 80

約数和(自身を含む): 200880000

約数和(自身を除く): 123051920

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 59, 80, 88, 110, 118, 176, 220, 236, 295, 440, 472, 590, 649, 880, 944, 1180, 1298, 1499, 2360, 2596, 2998, 3245, 4720, 5192, 5996, 6490, 7495, 10384, 11992, 12980, 14990, 16489, 23984, 25960, 29980, 32978, 51920, 59960, 65956, 82445, 88441, 119920, 131912, 164890, 176882, 263824, 329780, 353764, 442205, 659560, 707528, 884410, 972851, 1319120, 1415056, 1768820, 1945702, 3537640, 3891404, 4864255, 7075280, 7782808, 9728510, 15565616, 19457020, 38914040, 77828080]

約数ペア:

[(1, 77828080), (2, 38914040), (4, 19457020), (5, 15565616), (8, 9728510), (10, 7782808), (11, 7075280), (16, 4864255), (20, 3891404), (22, 3537640), (40, 1945702), (44, 1768820), (55, 1415056), (59, 1319120), (80, 972851), (88, 884410), (110, 707528), (118, 659560), (176, 442205), (220, 353764), (236, 329780), (295, 263824), (440, 176882), (472, 164890), (590, 131912), (649, 119920), (880, 88441), (944, 82445), (1180, 65956), (1298, 59960), (1499, 51920), (2360, 32978), (2596, 29980), (2998, 25960), (3245, 23984), (4720, 16489), (5192, 14990), (5996, 12980), (6490, 11992), (7495, 10384)]