81380710

素因数分解:

$2^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{89}}^1\times {\mathrm{1499}}^1$

素因数の和:1656

約数の個数: 32

約数和(自身を含む): 150660000

約数和(自身を除く): 69279290

約数列:

[1, 2, 5, 10, 61, 89, 122, 178, 305, 445, 610, 890, 1499, 2998, 5429, 7495, 10858, 14990, 27145, 54290, 91439, 133411, 182878, 266822, 457195, 667055, 914390, 1334110, 8138071, 16276142, 40690355, 81380710]

約数ペア:

[(1, 81380710), (2, 40690355), (5, 16276142), (10, 8138071), (61, 1334110), (89, 914390), (122, 667055), (178, 457195), (305, 266822), (445, 182878), (610, 133411), (890, 91439), (1499, 54290), (2998, 27145), (5429, 14990), (7495, 10858)]