21266804

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{241}}^1\times {\mathrm{1697}}^1$

素因数の和:1955

約数の個数: 24

約数和(自身を含む): 40269768

約数和(自身を除く): 19002964

約数列:

[1, 2, 4, 13, 26, 52, 241, 482, 964, 1697, 3133, 3394, 6266, 6788, 12532, 22061, 44122, 88244, 408977, 817954, 1635908, 5316701, 10633402, 21266804]

約数ペア:

[(1, 21266804), (2, 10633402), (4, 5316701), (13, 1635908), (26, 817954), (52, 408977), (241, 88244), (482, 44122), (964, 22061), (1697, 12532), (3133, 6788), (3394, 6266)]