28640475

素因数分解:

$3^2\times 5^2\times {\mathrm{127291}}^1$

素因数の和:127307

約数の個数: 18

約数和(自身を含む): 51298676

約数和(自身を除く): 22658201

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 225, 127291, 381873, 636455, 1145619, 1909365, 3182275, 5728095, 9546825, 28640475]

約数ペア:

[(1, 28640475), (3, 9546825), (5, 5728095), (9, 3182275), (15, 1909365), (25, 1145619), (45, 636455), (75, 381873), (225, 127291)]