21044180

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{19853}}^1$

素因数の和:19915

約数の個数: 24

約数和(自身を含む): 45028872

約数和(自身を除く): 23984692

約数列:

[1, 2, 4, 5, 10, 20, 53, 106, 212, 265, 530, 1060, 19853, 39706, 79412, 99265, 198530, 397060, 1052209, 2104418, 4208836, 5261045, 10522090, 21044180]

約数ペア:

[(1, 21044180), (2, 10522090), (4, 5261045), (5, 4208836), (10, 2104418), (20, 1052209), (53, 397060), (106, 198530), (212, 99265), (265, 79412), (530, 39706), (1060, 19853)]