72173913

素因数分解:

$3^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{25841}}^1$

素因数の和:25877

約数の個数: 24

約数和(自身を含む): 117839520

約数和(自身を除く): 45665607

約数列:

[1, 3, 7, 19, 21, 49, 57, 133, 147, 399, 931, 2793, 25841, 77523, 180887, 490979, 542661, 1266209, 1472937, 3436853, 3798627, 10310559, 24057971, 72173913]

約数ペア:

[(1, 72173913), (3, 24057971), (7, 10310559), (19, 3798627), (21, 3436853), (49, 1472937), (57, 1266209), (133, 542661), (147, 490979), (399, 180887), (931, 77523), (2793, 25841)]