71978403

素因数分解:

$3^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{25771}}^1$

素因数の和:25807

約数の個数: 24

約数和(自身を含む): 117520320

約数和(自身を除く): 45541917

約数列:

[1, 3, 7, 19, 21, 49, 57, 133, 147, 399, 931, 2793, 25771, 77313, 180397, 489649, 541191, 1262779, 1468947, 3427543, 3788337, 10282629, 23992801, 71978403]

約数ペア:

[(1, 71978403), (3, 23992801), (7, 10282629), (19, 3788337), (21, 3427543), (49, 1468947), (57, 1262779), (133, 541191), (147, 489649), (399, 180397), (931, 77313), (2793, 25771)]