81045040

素因数分解:

$2^4\times 5^1\times {\mathrm{1013063}}^1$

素因数の和:1013076

約数の個数: 20

約数和(自身を含む): 188429904

約数和(自身を除く): 107384864

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1013063, 2026126, 4052252, 5065315, 8104504, 10130630, 16209008, 20261260, 40522520, 81045040]

約数ペア:

[(1, 81045040), (2, 40522520), (4, 20261260), (5, 16209008), (8, 10130630), (10, 8104504), (16, 5065315), (20, 4052252), (40, 2026126), (80, 1013063)]