21157251017

素因数分解:

$7^2\times {\mathrm{23}}^1\times {\mathrm{18773071}}^1$

素因数の和:18773108

約数の個数: 12

約数和(自身を含む): 25681562496

約数和(自身を除く): 4524311479

約数列:

[1, 7, 23, 49, 161, 1127, 18773071, 131411497, 431780633, 919880479, 3022464431, 21157251017]

約数ペア:

[(1, 21157251017), (7, 3022464431), (23, 919880479), (49, 431780633), (161, 131411497), (1127, 18773071)]