1971640

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{4481}}^1$

素因数の和:4503

約数の個数: 32

約数和(自身を含む): 4840560

約数和(自身を除く): 2868920

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 4481, 8962, 17924, 22405, 35848, 44810, 49291, 89620, 98582, 179240, 197164, 246455, 394328, 492910, 985820, 1971640]

約数ペア:

[(1, 1971640), (2, 985820), (4, 492910), (5, 394328), (8, 246455), (10, 197164), (11, 179240), (20, 98582), (22, 89620), (40, 49291), (44, 44810), (55, 35848), (88, 22405), (110, 17924), (220, 8962), (440, 4481)]