312139820

素因数分解:

$2^2\times 5^1\times {\mathrm{15606991}}^1$

素因数の和:15607000

約数の個数: 12

約数和(自身を含む): 655493664

約数和(自身を除く): 343353844

約数列:

[1, 2, 4, 5, 10, 20, 15606991, 31213982, 62427964, 78034955, 156069910, 312139820]

約数ペア:

[(1, 312139820), (2, 156069910), (4, 78034955), (5, 62427964), (10, 31213982), (20, 15606991)]