20281850

素因数分解:

$2^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{107}}^1\times {\mathrm{223}}^1$

素因数の和:359

約数の個数: 48

約数和(自身を含む): 40497408

約数和(自身を除く): 20215558

約数列:

[1, 2, 5, 10, 17, 25, 34, 50, 85, 107, 170, 214, 223, 425, 446, 535, 850, 1070, 1115, 1819, 2230, 2675, 3638, 3791, 5350, 5575, 7582, 9095, 11150, 18190, 18955, 23861, 37910, 45475, 47722, 90950, 94775, 119305, 189550, 238610, 405637, 596525, 811274, 1193050, 2028185, 4056370, 10140925, 20281850]

約数ペア:

[(1, 20281850), (2, 10140925), (5, 4056370), (10, 2028185), (17, 1193050), (25, 811274), (34, 596525), (50, 405637), (85, 238610), (107, 189550), (170, 119305), (214, 94775), (223, 90950), (425, 47722), (446, 45475), (535, 37910), (850, 23861), (1070, 18955), (1115, 18190), (1819, 11150), (2230, 9095), (2675, 7582), (3638, 5575), (3791, 5350)]