21188684

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{397}}^1\times {\mathrm{1213}}^1$

素因数の和:1625

約数の個数: 24

約数和(自身を含む): 40586448

約数和(自身を除く): 19397764

約数列:

[1, 2, 4, 11, 22, 44, 397, 794, 1213, 1588, 2426, 4367, 4852, 8734, 13343, 17468, 26686, 53372, 481561, 963122, 1926244, 5297171, 10594342, 21188684]

約数ペア:

[(1, 21188684), (2, 10594342), (4, 5297171), (11, 1926244), (22, 963122), (44, 481561), (397, 53372), (794, 26686), (1213, 17468), (1588, 13343), (2426, 8734), (4367, 4852)]