20564105

素因数分解:

$5^1\times {\mathrm{43}}^1\times {\mathrm{101}}^1\times {\mathrm{947}}^1$

素因数の和:1096

約数の個数: 16

約数和(自身を含む): 25527744

約数和(自身を除く): 4963639

約数列:

[1, 5, 43, 101, 215, 505, 947, 4343, 4735, 21715, 40721, 95647, 203605, 478235, 4112821, 20564105]

約数ペア:

[(1, 20564105), (5, 4112821), (43, 478235), (101, 203605), (215, 95647), (505, 40721), (947, 21715), (4343, 4735)]