127920440

素因数分解:

$2^3\times 5^1\times {\mathrm{3198011}}^1$

素因数の和:3198022

約数の個数: 16

約数和(自身を含む): 287821080

約数和(自身を除く): 159900640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 3198011, 6396022, 12792044, 15990055, 25584088, 31980110, 63960220, 127920440]

約数ペア:

[(1, 127920440), (2, 63960220), (4, 31980110), (5, 25584088), (8, 15990055), (10, 12792044), (20, 6396022), (40, 3198011)]