21573380

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{26309}}^1$

素因数の和:26359

約数の個数: 24

約数和(自身を含む): 46410840

約数和(自身を除く): 24837460

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 26309, 52618, 105236, 131545, 263090, 526180, 1078669, 2157338, 4314676, 5393345, 10786690, 21573380]

約数ペア:

[(1, 21573380), (2, 10786690), (4, 5393345), (5, 4314676), (10, 2157338), (20, 1078669), (41, 526180), (82, 263090), (164, 131545), (205, 105236), (410, 52618), (820, 26309)]