64541380

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{2539}}^1$

素因数の和:2620

約数の個数: 48

約数和(自身を含む): 143377920

約数和(自身を除く): 78836540

約数列:

[1, 2, 4, 5, 10, 20, 31, 41, 62, 82, 124, 155, 164, 205, 310, 410, 620, 820, 1271, 2539, 2542, 5078, 5084, 6355, 10156, 12695, 12710, 25390, 25420, 50780, 78709, 104099, 157418, 208198, 314836, 393545, 416396, 520495, 787090, 1040990, 1574180, 2081980, 3227069, 6454138, 12908276, 16135345, 32270690, 64541380]

約数ペア:

[(1, 64541380), (2, 32270690), (4, 16135345), (5, 12908276), (10, 6454138), (20, 3227069), (31, 2081980), (41, 1574180), (62, 1040990), (82, 787090), (124, 520495), (155, 416396), (164, 393545), (205, 314836), (310, 208198), (410, 157418), (620, 104099), (820, 78709), (1271, 50780), (2539, 25420), (2542, 25390), (5078, 12710), (5084, 12695), (6355, 10156)]