20180243025

素因数分解:

$3^2\times 5^2\times {\mathrm{71}}^1\times {\mathrm{1263239}}^1$

素因数の和:1263326

約数の個数: 36

約数和(自身を含む): 36654171840

約数和(自身を除く): 16473928815

約数列:

[1, 3, 5, 9, 15, 25, 45, 71, 75, 213, 225, 355, 639, 1065, 1775, 3195, 5325, 15975, 1263239, 3789717, 6316195, 11369151, 18948585, 31580975, 56845755, 89689969, 94742925, 269069907, 284228775, 448449845, 807209721, 1345349535, 2242249225, 4036048605, 6726747675, 20180243025]

約数ペア:

[(1, 20180243025), (3, 6726747675), (5, 4036048605), (9, 2242249225), (15, 1345349535), (25, 807209721), (45, 448449845), (71, 284228775), (75, 269069907), (213, 94742925), (225, 89689969), (355, 56845755), (639, 31580975), (1065, 18948585), (1775, 11369151), (3195, 6316195), (5325, 3789717), (15975, 1263239)]