20518701

素因数分解:

$3^1\times 7^2\times {\mathrm{97}}^1\times {\mathrm{1439}}^1$

素因数の和:1553

約数の個数: 24

約数和(自身を含む): 32175360

約数和(自身を除く): 11656659

約数列:

[1, 3, 7, 21, 49, 97, 147, 291, 679, 1439, 2037, 4317, 4753, 10073, 14259, 30219, 70511, 139583, 211533, 418749, 977081, 2931243, 6839567, 20518701]

約数ペア:

[(1, 20518701), (3, 6839567), (7, 2931243), (21, 977081), (49, 418749), (97, 211533), (147, 139583), (291, 70511), (679, 30219), (1439, 14259), (2037, 10073), (4317, 4753)]