640320634

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{151}}^1\times {\mathrm{111593}}^1$

素因数の和:111765

約数の個数: 16

約数和(自身を含む): 1017737280

約数和(自身を除く): 377416646

約数列:

[1, 2, 19, 38, 151, 302, 2869, 5738, 111593, 223186, 2120267, 4240534, 16850543, 33701086, 320160317, 640320634]

約数ペア:

[(1, 640320634), (2, 320160317), (19, 33701086), (38, 16850543), (151, 4240534), (302, 2120267), (2869, 223186), (5738, 111593)]