18991170020

素因数分解:

$2^2\times 5^1\times {\mathrm{1861}}^1\times {\mathrm{510241}}^1$

素因数の和:512111

約数の個数: 24

約数和(自身を含む): 39902965368

約数和(自身を除く): 20911795348

約数列:

[1, 2, 4, 5, 10, 20, 1861, 3722, 7444, 9305, 18610, 37220, 510241, 1020482, 2040964, 2551205, 5102410, 10204820, 949558501, 1899117002, 3798234004, 4747792505, 9495585010, 18991170020]

約数ペア:

[(1, 18991170020), (2, 9495585010), (4, 4747792505), (5, 3798234004), (10, 1899117002), (20, 949558501), (1861, 10204820), (3722, 5102410), (7444, 2551205), (9305, 2040964), (18610, 1020482), (37220, 510241)]