72155780

素因数分解:

$2^2\times 5^1\times {\mathrm{409}}^1\times {\mathrm{8821}}^1$

素因数の和:9239

約数の個数: 24

約数和(自身を含む): 151914840

約数和(自身を除く): 79759060

約数列:

[1, 2, 4, 5, 10, 20, 409, 818, 1636, 2045, 4090, 8180, 8821, 17642, 35284, 44105, 88210, 176420, 3607789, 7215578, 14431156, 18038945, 36077890, 72155780]

約数ペア:

[(1, 72155780), (2, 36077890), (4, 18038945), (5, 14431156), (10, 7215578), (20, 3607789), (409, 176420), (818, 88210), (1636, 44105), (2045, 35284), (4090, 17642), (8180, 8821)]