21998977

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{21977}}^1$

素因数の和:22008

約数の個数: 16

約数和(自身を含む): 29538432

約数和(自身を除く): 7539455

約数列:

[1, 7, 11, 13, 77, 91, 143, 1001, 21977, 153839, 241747, 285701, 1692229, 1999907, 3142711, 21998977]

約数ペア:

[(1, 21998977), (7, 3142711), (11, 1999907), (13, 1692229), (77, 285701), (91, 241747), (143, 153839), (1001, 21977)]