640023556

素因数分解:

$2^2\times {\mathrm{79}}^1\times {\mathrm{131}}^1\times {\mathrm{15461}}^1$

素因数の和:15675

約数の個数: 24

約数和(自身を含む): 1142951040

約数和(自身を除く): 502927484

約数列:

[1, 2, 4, 79, 131, 158, 262, 316, 524, 10349, 15461, 20698, 30922, 41396, 61844, 1221419, 2025391, 2442838, 4050782, 4885676, 8101564, 160005889, 320011778, 640023556]

約数ペア:

[(1, 640023556), (2, 320011778), (4, 160005889), (79, 8101564), (131, 4885676), (158, 4050782), (262, 2442838), (316, 2025391), (524, 1221419), (10349, 61844), (15461, 41396), (20698, 30922)]