21189188

素因数分解:

$2^2\times {\mathrm{53}}^1\times {\mathrm{127}}^1\times {\mathrm{787}}^1$

素因数の和:971

約数の個数: 24

約数和(自身を含む): 38126592

約数和(自身を除く): 16937404

約数列:

[1, 2, 4, 53, 106, 127, 212, 254, 508, 787, 1574, 3148, 6731, 13462, 26924, 41711, 83422, 99949, 166844, 199898, 399796, 5297297, 10594594, 21189188]

約数ペア:

[(1, 21189188), (2, 10594594), (4, 5297297), (53, 399796), (106, 199898), (127, 166844), (212, 99949), (254, 83422), (508, 41711), (787, 26924), (1574, 13462), (3148, 6731)]