20894140

素因数分解:

$2^2\times 5^1\times {\mathrm{719}}^1\times {\mathrm{1453}}^1$

素因数の和:2181

約数の個数: 24

約数和(自身を含む): 43968960

約数和(自身を除く): 23074820

約数列:

[1, 2, 4, 5, 10, 20, 719, 1438, 1453, 2876, 2906, 3595, 5812, 7190, 7265, 14380, 14530, 29060, 1044707, 2089414, 4178828, 5223535, 10447070, 20894140]

約数ペア:

[(1, 20894140), (2, 10447070), (4, 5223535), (5, 4178828), (10, 2089414), (20, 1044707), (719, 29060), (1438, 14530), (1453, 14380), (2876, 7265), (2906, 7190), (3595, 5812)]