644155975

素因数分解:

$5^2\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{28661}}^1$

素因数の和:28731

約数の個数: 24

約数和(自身を含む): 852981120

約数和(自身を除く): 208825145

約数列:

[1, 5, 25, 29, 31, 145, 155, 725, 775, 899, 4495, 22475, 28661, 143305, 716525, 831169, 888491, 4155845, 4442455, 20779225, 22212275, 25766239, 128831195, 644155975]

約数ペア:

[(1, 644155975), (5, 128831195), (25, 25766239), (29, 22212275), (31, 20779225), (145, 4442455), (155, 4155845), (725, 888491), (775, 831169), (899, 716525), (4495, 143305), (22475, 28661)]