20649565

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{127}}^1\times {\mathrm{1049}}^1$

素因数の和:1212

約数の個数: 16

約数和(自身を含む): 25804800

約数和(自身を除く): 5155235

約数列:

[1, 5, 31, 127, 155, 635, 1049, 3937, 5245, 19685, 32519, 133223, 162595, 666115, 4129913, 20649565]

約数ペア:

[(1, 20649565), (5, 4129913), (31, 666115), (127, 162595), (155, 133223), (635, 32519), (1049, 19685), (3937, 5245)]