81795680

素因数分解:

$2^5\times 5^1\times {\mathrm{511223}}^1$

素因数の和:511238

約数の個数: 24

約数和(自身を含む): 193242672

約数和(自身を除く): 111446992

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 511223, 1022446, 2044892, 2556115, 4089784, 5112230, 8179568, 10224460, 16359136, 20448920, 40897840, 81795680]

約数ペア:

[(1, 81795680), (2, 40897840), (4, 20448920), (5, 16359136), (8, 10224460), (10, 8179568), (16, 5112230), (20, 4089784), (32, 2556115), (40, 2044892), (80, 1022446), (160, 511223)]