28551820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{233}}^1\times {\mathrm{557}}^1$

素因数の和:810

約数の個数: 48

約数和(自身を含む): 65808288

約数和(自身を除く): 37256468

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 233, 466, 557, 932, 1114, 1165, 2228, 2330, 2563, 2785, 4660, 5126, 5570, 6127, 10252, 11140, 12254, 12815, 24508, 25630, 30635, 51260, 61270, 122540, 129781, 259562, 519124, 648905, 1297810, 1427591, 2595620, 2855182, 5710364, 7137955, 14275910, 28551820]

約数ペア:

[(1, 28551820), (2, 14275910), (4, 7137955), (5, 5710364), (10, 2855182), (11, 2595620), (20, 1427591), (22, 1297810), (44, 648905), (55, 519124), (110, 259562), (220, 129781), (233, 122540), (466, 61270), (557, 51260), (932, 30635), (1114, 25630), (1165, 24508), (2228, 12815), (2330, 12254), (2563, 11140), (2785, 10252), (4660, 6127), (5126, 5570)]