20555240

素因数分解:

$2^3\times 5^1\times {\mathrm{513881}}^1$

素因数の和:513892

約数の個数: 16

約数和(自身を含む): 46249380

約数和(自身を除く): 25694140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 513881, 1027762, 2055524, 2569405, 4111048, 5138810, 10277620, 20555240]

約数ペア:

[(1, 20555240), (2, 10277620), (4, 5138810), (5, 4111048), (8, 2569405), (10, 2055524), (20, 1027762), (40, 513881)]