20047275

素因数分解:

$3^2\times 5^2\times {\mathrm{139}}^1\times {\mathrm{641}}^1$

素因数の和:796

約数の個数: 36

約数和(自身を含む): 36221640

約数和(自身を除く): 16174365

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 139, 225, 417, 641, 695, 1251, 1923, 2085, 3205, 3475, 5769, 6255, 9615, 10425, 16025, 28845, 31275, 48075, 89099, 144225, 267297, 445495, 801891, 1336485, 2227475, 4009455, 6682425, 20047275]

約数ペア:

[(1, 20047275), (3, 6682425), (5, 4009455), (9, 2227475), (15, 1336485), (25, 801891), (45, 445495), (75, 267297), (139, 144225), (225, 89099), (417, 48075), (641, 31275), (695, 28845), (1251, 16025), (1923, 10425), (2085, 9615), (3205, 6255), (3475, 5769)]