18876743020

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{13293481}}^1$

素因数の和:13293561

約数の個数: 24

約数和(自身を含む): 40199489568

約数和(自身を除く): 21322746548

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 13293481, 26586962, 53173924, 66467405, 132934810, 265869620, 943837151, 1887674302, 3775348604, 4719185755, 9438371510, 18876743020]

約数ペア:

[(1, 18876743020), (2, 9438371510), (4, 4719185755), (5, 3775348604), (10, 1887674302), (20, 943837151), (71, 265869620), (142, 132934810), (284, 66467405), (355, 53173924), (710, 26586962), (1420, 13293481)]