21000912572

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{1601}}^1\times {\mathrm{172597}}^1$

素因数の和:174221

約数の個数: 24

約数和(自身を含む): 38710279440

約数和(自身を除く): 17709366868

約数列:

[1, 2, 4, 19, 38, 76, 1601, 3202, 6404, 30419, 60838, 121676, 172597, 345194, 690388, 3279343, 6558686, 13117372, 276327797, 552655594, 1105311188, 5250228143, 10500456286, 21000912572]

約数ペア:

[(1, 21000912572), (2, 10500456286), (4, 5250228143), (19, 1105311188), (38, 552655594), (76, 276327797), (1601, 13117372), (3202, 6558686), (6404, 3279343), (30419, 690388), (60838, 345194), (121676, 172597)]