399890644

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{5261719}}^1$

素因数の和:5261742

約数の個数: 12

約数和(自身を含む): 736640800

約数和(自身を除く): 336750156

約数列:

[1, 2, 4, 19, 38, 76, 5261719, 10523438, 21046876, 99972661, 199945322, 399890644]

約数ペア:

[(1, 399890644), (2, 199945322), (4, 99972661), (19, 21046876), (38, 10523438), (76, 5261719)]