18511820

素因数分解:

$2^2\times 5^1\times {\mathrm{571}}^1\times {\mathrm{1621}}^1$

素因数の和:2201

約数の個数: 24

約数和(自身を含む): 38966928

約数和(自身を除く): 20455108

約数列:

[1, 2, 4, 5, 10, 20, 571, 1142, 1621, 2284, 2855, 3242, 5710, 6484, 8105, 11420, 16210, 32420, 925591, 1851182, 3702364, 4627955, 9255910, 18511820]

約数ペア:

[(1, 18511820), (2, 9255910), (4, 4627955), (5, 3702364), (10, 1851182), (20, 925591), (571, 32420), (1142, 16210), (1621, 11420), (2284, 8105), (2855, 6484), (3242, 5710)]