21000638953

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{157899541}}^1$

素因数の和:157899567

約数の個数: 8

約数和(自身を含む): 25263926720

約数和(自身を除く): 4263287767

約数列:

[1, 7, 19, 133, 157899541, 1105296787, 3000091279, 21000638953]

約数ペア:

[(1, 21000638953), (7, 3000091279), (19, 1105296787), (133, 157899541)]