20120681679

素因数分解:

$3^1\times 7^1\times {\mathrm{641}}^1\times {\mathrm{1494739}}^1$

素因数の和:1495390

約数の個数: 16

約数和(自身を含む): 30707938560

約数和(自身を除く): 10587256881

約数列:

[1, 3, 7, 21, 641, 1923, 4487, 13461, 1494739, 4484217, 10463173, 31389519, 958127699, 2874383097, 6706893893, 20120681679]

約数ペア:

[(1, 20120681679), (3, 6706893893), (7, 2874383097), (21, 958127699), (641, 31389519), (1923, 10463173), (4487, 4484217), (13461, 1494739)]