161856260

素因数分解:

$2^2\times 5^1\times {\mathrm{103}}^1\times {\mathrm{78571}}^1$

素因数の和:78683

約数の個数: 24

約数和(自身を含む): 343202496

約数和(自身を除く): 181346236

約数列:

[1, 2, 4, 5, 10, 20, 103, 206, 412, 515, 1030, 2060, 78571, 157142, 314284, 392855, 785710, 1571420, 8092813, 16185626, 32371252, 40464065, 80928130, 161856260]

約数ペア:

[(1, 161856260), (2, 80928130), (4, 40464065), (5, 32371252), (10, 16185626), (20, 8092813), (103, 1571420), (206, 785710), (412, 392855), (515, 314284), (1030, 157142), (2060, 78571)]