20999564

素因数分解:

$2^2\times {\mathrm{139}}^1\times {\mathrm{179}}^1\times {\mathrm{211}}^1$

素因数の和:533

約数の個数: 24

約数和(自身を含む): 37396800

約数和(自身を除く): 16397236

約数列:

[1, 2, 4, 139, 179, 211, 278, 358, 422, 556, 716, 844, 24881, 29329, 37769, 49762, 58658, 75538, 99524, 117316, 151076, 5249891, 10499782, 20999564]

約数ペア:

[(1, 20999564), (2, 10499782), (4, 5249891), (139, 151076), (179, 117316), (211, 99524), (278, 75538), (358, 58658), (422, 49762), (556, 37769), (716, 29329), (844, 24881)]