21601564

素因数分解:

$2^2\times {\mathrm{61}}^1\times {\mathrm{223}}^1\times {\mathrm{397}}^1$

素因数の和:685

約数の個数: 24

約数和(自身を含む): 38691968

約数和(自身を除く): 17090404

約数列:

[1, 2, 4, 61, 122, 223, 244, 397, 446, 794, 892, 1588, 13603, 24217, 27206, 48434, 54412, 88531, 96868, 177062, 354124, 5400391, 10800782, 21601564]

約数ペア:

[(1, 21601564), (2, 10800782), (4, 5400391), (61, 354124), (122, 177062), (223, 96868), (244, 88531), (397, 54412), (446, 48434), (794, 27206), (892, 24217), (1588, 13603)]