21015826

素因数分解:

$2^1\times {\mathrm{13}}^2\times {\mathrm{97}}^1\times {\mathrm{641}}^1$

素因数の和:766

約数の個数: 24

約数和(自身を含む): 34540884

約数和(自身を除く): 13525058

約数列:

[1, 2, 13, 26, 97, 169, 194, 338, 641, 1261, 1282, 2522, 8333, 16393, 16666, 32786, 62177, 108329, 124354, 216658, 808301, 1616602, 10507913, 21015826]

約数ペア:

[(1, 21015826), (2, 10507913), (13, 1616602), (26, 808301), (97, 216658), (169, 124354), (194, 108329), (338, 62177), (641, 32786), (1261, 16666), (1282, 16393), (2522, 8333)]