21911659

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{7691}}^1$

素因数の和:7746

約数の個数: 16

約数和(自身を含む): 28060416

約数和(自身を除く): 6148757

約数列:

[1, 7, 11, 37, 77, 259, 407, 2849, 7691, 53837, 84601, 284567, 592207, 1991969, 3130237, 21911659]

約数ペア:

[(1, 21911659), (7, 3130237), (11, 1991969), (37, 592207), (77, 284567), (259, 84601), (407, 53837), (2849, 7691)]