128876765

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{163}}^1\times {\mathrm{5101}}^1$

素因数の和:5300

約数の個数: 16

約数和(自身を含む): 160651776

約数和(自身を除く): 31775011

約数列:

[1, 5, 31, 155, 163, 815, 5053, 5101, 25265, 25505, 158131, 790655, 831463, 4157315, 25775353, 128876765]

約数ペア:

[(1, 128876765), (5, 25775353), (31, 4157315), (155, 831463), (163, 790655), (815, 158131), (5053, 25505), (5101, 25265)]