221207903

素因数分解:

$7^3\times {\mathrm{151}}^1\times {\mathrm{4271}}^1$

素因数の和:4443

約数の個数: 16

約数和(自身を含む): 259737600

約数和(自身を除く): 38529697

約数列:

[1, 7, 49, 151, 343, 1057, 4271, 7399, 29897, 51793, 209279, 644921, 1464953, 4514447, 31601129, 221207903]

約数ペア:

[(1, 221207903), (7, 31601129), (49, 4514447), (151, 1464953), (343, 644921), (1057, 209279), (4271, 51793), (7399, 29897)]