21274547

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{1553}}^1$

素因数の和:1682

約数の個数: 16

約数和(自身を含む): 25858560

約数和(自身を除く): 4584013

約数列:

[1, 7, 19, 103, 133, 721, 1553, 1957, 10871, 13699, 29507, 159959, 206549, 1119713, 3039221, 21274547]

約数ペア:

[(1, 21274547), (7, 3039221), (19, 1119713), (103, 206549), (133, 159959), (721, 29507), (1553, 13699), (1957, 10871)]