21157796

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{7177}}^1$

素因数の和:7259

約数の個数: 24

約数和(自身を含む): 41000736

約数和(自身を除く): 19842940

約数列:

[1, 2, 4, 11, 22, 44, 67, 134, 268, 737, 1474, 2948, 7177, 14354, 28708, 78947, 157894, 315788, 480859, 961718, 1923436, 5289449, 10578898, 21157796]

約数ペア:

[(1, 21157796), (2, 10578898), (4, 5289449), (11, 1923436), (22, 961718), (44, 480859), (67, 315788), (134, 157894), (268, 78947), (737, 28708), (1474, 14354), (2948, 7177)]