21000620152

素因数分解:

$2^3\times {\mathrm{1217}}^1\times {\mathrm{2157007}}^1$

素因数の和:2158230

約数の個数: 16

約数和(自身を含む): 39408536160

約数和(自身を除く): 18407916008

約数列:

[1, 2, 4, 8, 1217, 2434, 4868, 9736, 2157007, 4314014, 8628028, 17256056, 2625077519, 5250155038, 10500310076, 21000620152]

約数ペア:

[(1, 21000620152), (2, 10500310076), (4, 5250155038), (8, 2625077519), (1217, 17256056), (2434, 8628028), (4868, 4314014), (9736, 2157007)]