20005220

素因数分解:

$2^2\times 5^1\times {\mathrm{271}}^1\times {\mathrm{3691}}^1$

素因数の和:3971

約数の個数: 24

約数和(自身を含む): 42177408

約数和(自身を除く): 22172188

約数列:

[1, 2, 4, 5, 10, 20, 271, 542, 1084, 1355, 2710, 3691, 5420, 7382, 14764, 18455, 36910, 73820, 1000261, 2000522, 4001044, 5001305, 10002610, 20005220]

約数ペア:

[(1, 20005220), (2, 10002610), (4, 5001305), (5, 4001044), (10, 2000522), (20, 1000261), (271, 73820), (542, 36910), (1084, 18455), (1355, 14764), (2710, 7382), (3691, 5420)]