21005204

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{569}}^1\times {\mathrm{839}}^1$

素因数の和:1423

約数の個数: 24

約数和(自身を含む): 40219200

約数和(自身を除く): 19213996

約数列:

[1, 2, 4, 11, 22, 44, 569, 839, 1138, 1678, 2276, 3356, 6259, 9229, 12518, 18458, 25036, 36916, 477391, 954782, 1909564, 5251301, 10502602, 21005204]

約数ペア:

[(1, 21005204), (2, 10502602), (4, 5251301), (11, 1909564), (22, 954782), (44, 477391), (569, 36916), (839, 25036), (1138, 18458), (1678, 12518), (2276, 9229), (3356, 6259)]