21851080

素因数分解:

$2^3\times 5^1\times {\mathrm{337}}^1\times {\mathrm{1621}}^1$

素因数の和:1969

約数の個数: 32

約数和(自身を含む): 49341240

約数和(自身を除く): 27490160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 337, 674, 1348, 1621, 1685, 2696, 3242, 3370, 6484, 6740, 8105, 12968, 13480, 16210, 32420, 64840, 546277, 1092554, 2185108, 2731385, 4370216, 5462770, 10925540, 21851080]

約数ペア:

[(1, 21851080), (2, 10925540), (4, 5462770), (5, 4370216), (8, 2731385), (10, 2185108), (20, 1092554), (40, 546277), (337, 64840), (674, 32420), (1348, 16210), (1621, 13480), (1685, 12968), (2696, 8105), (3242, 6740), (3370, 6484)]