20513907

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{113}}^1\times {\mathrm{877}}^1$

素因数の和:1019

約数の個数: 24

約数和(自身を含む): 31228704

約数和(自身を除く): 10714797

約数列:

[1, 3, 9, 23, 69, 113, 207, 339, 877, 1017, 2599, 2631, 7797, 7893, 20171, 23391, 60513, 99101, 181539, 297303, 891909, 2279323, 6837969, 20513907]

約数ペア:

[(1, 20513907), (3, 6837969), (9, 2279323), (23, 891909), (69, 297303), (113, 181539), (207, 99101), (339, 60513), (877, 23391), (1017, 20171), (2599, 7893), (2631, 7797)]