20381564

素因数分解:

$2^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{11933}}^1$

素因数の和:12005

約数の個数: 24

約数和(自身を含む): 41434848

約数和(自身を除く): 21053284

約数列:

[1, 2, 4, 7, 14, 28, 61, 122, 244, 427, 854, 1708, 11933, 23866, 47732, 83531, 167062, 334124, 727913, 1455826, 2911652, 5095391, 10190782, 20381564]

約数ペア:

[(1, 20381564), (2, 10190782), (4, 5095391), (7, 2911652), (14, 1455826), (28, 727913), (61, 334124), (122, 167062), (244, 83531), (427, 47732), (854, 23866), (1708, 11933)]