318628840

素因数分解:

$2^3\times 5^1\times {\mathrm{7965721}}^1$

素因数の和:7965732

約数の個数: 16

約数和(自身を含む): 716914980

約数和(自身を除く): 398286140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 7965721, 15931442, 31862884, 39828605, 63725768, 79657210, 159314420, 318628840]

約数ペア:

[(1, 318628840), (2, 159314420), (4, 79657210), (5, 63725768), (8, 39828605), (10, 31862884), (20, 15931442), (40, 7965721)]