31839140

素因数分解:

$2^2\times 5^1\times {\mathrm{197}}^1\times {\mathrm{8081}}^1$

素因数の和:8287

約数の個数: 24

約数和(自身を含む): 67209912

約数和(自身を除く): 35370772

約数列:

[1, 2, 4, 5, 10, 20, 197, 394, 788, 985, 1970, 3940, 8081, 16162, 32324, 40405, 80810, 161620, 1591957, 3183914, 6367828, 7959785, 15919570, 31839140]

約数ペア:

[(1, 31839140), (2, 15919570), (4, 7959785), (5, 6367828), (10, 3183914), (20, 1591957), (197, 161620), (394, 80810), (788, 40405), (985, 32324), (1970, 16162), (3940, 8081)]