19917580

素因数分解:

$2^2\times 5^1\times {\mathrm{809}}^1\times {\mathrm{1231}}^1$

素因数の和:2049

約数の個数: 24

約数和(自身を含む): 41912640

約数和(自身を除く): 21995060

約数列:

[1, 2, 4, 5, 10, 20, 809, 1231, 1618, 2462, 3236, 4045, 4924, 6155, 8090, 12310, 16180, 24620, 995879, 1991758, 3983516, 4979395, 9958790, 19917580]

約数ペア:

[(1, 19917580), (2, 9958790), (4, 4979395), (5, 3983516), (10, 1991758), (20, 995879), (809, 24620), (1231, 16180), (1618, 12310), (2462, 8090), (3236, 6155), (4045, 4924)]