21246524

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{479}}^1\times {\mathrm{853}}^1$

素因数の和:1349

約数の個数: 24

約数和(自身を含む): 40172160

約数和(自身を除く): 18925636

約数列:

[1, 2, 4, 13, 26, 52, 479, 853, 958, 1706, 1916, 3412, 6227, 11089, 12454, 22178, 24908, 44356, 408587, 817174, 1634348, 5311631, 10623262, 21246524]

約数ペア:

[(1, 21246524), (2, 10623262), (4, 5311631), (13, 1634348), (26, 817174), (52, 408587), (479, 44356), (853, 24908), (958, 22178), (1706, 12454), (1916, 11089), (3412, 6227)]