21779250

素因数分解:

$2^1\times 3^1\times 5^3\times {\mathrm{71}}^1\times {\mathrm{409}}^1$

素因数の和:500

約数の個数: 64

約数和(自身を含む): 55261440

約数和(自身を除く): 33482190

約数列:

[1, 2, 3, 5, 6, 10, 15, 25, 30, 50, 71, 75, 125, 142, 150, 213, 250, 355, 375, 409, 426, 710, 750, 818, 1065, 1227, 1775, 2045, 2130, 2454, 3550, 4090, 5325, 6135, 8875, 10225, 10650, 12270, 17750, 20450, 26625, 29039, 30675, 51125, 53250, 58078, 61350, 87117, 102250, 145195, 153375, 174234, 290390, 306750, 435585, 725975, 871170, 1451950, 2177925, 3629875, 4355850, 7259750, 10889625, 21779250]

約数ペア:

[(1, 21779250), (2, 10889625), (3, 7259750), (5, 4355850), (6, 3629875), (10, 2177925), (15, 1451950), (25, 871170), (30, 725975), (50, 435585), (71, 306750), (75, 290390), (125, 174234), (142, 153375), (150, 145195), (213, 102250), (250, 87117), (355, 61350), (375, 58078), (409, 53250), (426, 51125), (710, 30675), (750, 29039), (818, 26625), (1065, 20450), (1227, 17750), (1775, 12270), (2045, 10650), (2130, 10225), (2454, 8875), (3550, 6135), (4090, 5325)]