71986640

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{179}}^1\times {\mathrm{457}}^1$

素因数の和:660

約数の個数: 80

約数和(自身を含む): 184006080

約数和(自身を除く): 112019440

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 179, 220, 358, 440, 457, 716, 880, 895, 914, 1432, 1790, 1828, 1969, 2285, 2864, 3580, 3656, 3938, 4570, 5027, 7160, 7312, 7876, 9140, 9845, 10054, 14320, 15752, 18280, 19690, 20108, 25135, 31504, 36560, 39380, 40216, 50270, 78760, 80432, 81803, 100540, 157520, 163606, 201080, 327212, 402160, 409015, 654424, 818030, 899833, 1308848, 1636060, 1799666, 3272120, 3599332, 4499165, 6544240, 7198664, 8998330, 14397328, 17996660, 35993320, 71986640]

約数ペア:

[(1, 71986640), (2, 35993320), (4, 17996660), (5, 14397328), (8, 8998330), (10, 7198664), (11, 6544240), (16, 4499165), (20, 3599332), (22, 3272120), (40, 1799666), (44, 1636060), (55, 1308848), (80, 899833), (88, 818030), (110, 654424), (176, 409015), (179, 402160), (220, 327212), (358, 201080), (440, 163606), (457, 157520), (716, 100540), (880, 81803), (895, 80432), (914, 78760), (1432, 50270), (1790, 40216), (1828, 39380), (1969, 36560), (2285, 31504), (2864, 25135), (3580, 20108), (3656, 19690), (3938, 18280), (4570, 15752), (5027, 14320), (7160, 10054), (7312, 9845), (7876, 9140)]