21821080

素因数分解:

$2^3\times 5^1\times {\mathrm{545527}}^1$

素因数の和:545538

約数の個数: 16

約数和(自身を含む): 49097520

約数和(自身を除く): 27276440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 545527, 1091054, 2182108, 2727635, 4364216, 5455270, 10910540, 21821080]

約数ペア:

[(1, 21821080), (2, 10910540), (4, 5455270), (5, 4364216), (8, 2727635), (10, 2182108), (20, 1091054), (40, 545527)]