128239240

素因数分解:

$2^3\times 5^1\times {\mathrm{3205981}}^1$

素因数の和:3205992

約数の個数: 16

約数和(自身を含む): 288538380

約数和(自身を除く): 160299140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 3205981, 6411962, 12823924, 16029905, 25647848, 32059810, 64119620, 128239240]

約数ペア:

[(1, 128239240), (2, 64119620), (4, 32059810), (5, 25647848), (8, 16029905), (10, 12823924), (20, 6411962), (40, 3205981)]