21964475

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{3557}}^1$

素因数の和:3599

約数の個数: 24

約数和(自身を含む): 30883440

約数和(自身を除く): 8918965

約数列:

[1, 5, 13, 19, 25, 65, 95, 247, 325, 475, 1235, 3557, 6175, 17785, 46241, 67583, 88925, 231205, 337915, 878579, 1156025, 1689575, 4392895, 21964475]

約数ペア:

[(1, 21964475), (5, 4392895), (13, 1689575), (19, 1156025), (25, 878579), (65, 337915), (95, 231205), (247, 88925), (325, 67583), (475, 46241), (1235, 17785), (3557, 6175)]