21863120

素因数分解:

$2^4\times 5^1\times {\mathrm{273289}}^1$

素因数の和:273302

約数の個数: 20

約数和(自身を含む): 50831940

約数和(自身を除く): 28968820

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 273289, 546578, 1093156, 1366445, 2186312, 2732890, 4372624, 5465780, 10931560, 21863120]

約数ペア:

[(1, 21863120), (2, 10931560), (4, 5465780), (5, 4372624), (8, 2732890), (10, 2186312), (16, 1366445), (20, 1093156), (40, 546578), (80, 273289)]