20816740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{148691}}^1$

素因数の和:148707

約数の個数: 24

約数和(自身を含む): 49960512

約数和(自身を除く): 29143772

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 148691, 297382, 594764, 743455, 1040837, 1486910, 2081674, 2973820, 4163348, 5204185, 10408370, 20816740]

約数ペア:

[(1, 20816740), (2, 10408370), (4, 5204185), (5, 4163348), (7, 2973820), (10, 2081674), (14, 1486910), (20, 1040837), (28, 743455), (35, 594764), (70, 297382), (140, 148691)]