20907020

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{33721}}^1$

素因数の和:33761

約数の個数: 24

約数和(自身を含む): 45322368

約数和(自身を除く): 24415348

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 33721, 67442, 134884, 168605, 337210, 674420, 1045351, 2090702, 4181404, 5226755, 10453510, 20907020]

約数ペア:

[(1, 20907020), (2, 10453510), (4, 5226755), (5, 4181404), (10, 2090702), (20, 1045351), (31, 674420), (62, 337210), (124, 168605), (155, 134884), (310, 67442), (620, 33721)]