20817475

素因数分解:

$5^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{2531}}^1$

素因数の和:2595

約数の個数: 24

約数和(自身を含む): 30140928

約数和(自身を除く): 9323453

約数列:

[1, 5, 7, 25, 35, 47, 175, 235, 329, 1175, 1645, 2531, 8225, 12655, 17717, 63275, 88585, 118957, 442925, 594785, 832699, 2973925, 4163495, 20817475]

約数ペア:

[(1, 20817475), (5, 4163495), (7, 2973925), (25, 832699), (35, 594785), (47, 442925), (175, 118957), (235, 88585), (329, 63275), (1175, 17717), (1645, 12655), (2531, 8225)]