19006981780

素因数分解:

$2^2\times 5^1\times {\mathrm{950349089}}^1$

素因数の和:950349098

約数の個数: 12

約数和(自身を含む): 39914661780

約数和(自身を除く): 20907680000

約数列:

[1, 2, 4, 5, 10, 20, 950349089, 1900698178, 3801396356, 4751745445, 9503490890, 19006981780]

約数ペア:

[(1, 19006981780), (2, 9503490890), (4, 4751745445), (5, 3801396356), (10, 1900698178), (20, 950349089)]