20861420

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{22193}}^1$

素因数の和:22249

約数の個数: 24

約数和(自身を含む): 44743104

約数和(自身を除く): 23881684

約数列:

[1, 2, 4, 5, 10, 20, 47, 94, 188, 235, 470, 940, 22193, 44386, 88772, 110965, 221930, 443860, 1043071, 2086142, 4172284, 5215355, 10430710, 20861420]

約数ペア:

[(1, 20861420), (2, 10430710), (4, 5215355), (5, 4172284), (10, 2086142), (20, 1043071), (47, 443860), (94, 221930), (188, 110965), (235, 88772), (470, 44386), (940, 22193)]