21935221

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{113}}^1\times {\mathrm{2521}}^1$

素因数の和:2652

約数の個数: 16

約数和(自身を含む): 27600768

約数和(自身を除く): 5665547

約数列:

[1, 7, 11, 77, 113, 791, 1243, 2521, 8701, 17647, 27731, 194117, 284873, 1994111, 3133603, 21935221]

約数ペア:

[(1, 21935221), (7, 3133603), (11, 1994111), (77, 284873), (113, 194117), (791, 27731), (1243, 17647), (2521, 8701)]