20784620

素因数分解:

$2^2\times 5^1\times {\mathrm{191}}^1\times {\mathrm{5441}}^1$

素因数の和:5641

約数の個数: 24

約数和(自身を含む): 43884288

約数和(自身を除く): 23099668

約数列:

[1, 2, 4, 5, 10, 20, 191, 382, 764, 955, 1910, 3820, 5441, 10882, 21764, 27205, 54410, 108820, 1039231, 2078462, 4156924, 5196155, 10392310, 20784620]

約数ペア:

[(1, 20784620), (2, 10392310), (4, 5196155), (5, 4156924), (10, 2078462), (20, 1039231), (191, 108820), (382, 54410), (764, 27205), (955, 21764), (1910, 10882), (3820, 5441)]