131345680

素因数分解:

$2^4\times 5^1\times {\mathrm{1641821}}^1$

素因数の和:1641834

約数の個数: 20

約数和(自身を含む): 305378892

約数和(自身を除く): 174033212

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1641821, 3283642, 6567284, 8209105, 13134568, 16418210, 26269136, 32836420, 65672840, 131345680]

約数ペア:

[(1, 131345680), (2, 65672840), (4, 32836420), (5, 26269136), (8, 16418210), (10, 13134568), (16, 8209105), (20, 6567284), (40, 3283642), (80, 1641821)]