20211365

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{181}}^1\times {\mathrm{971}}^1$

素因数の和:1180

約数の個数: 16

約数和(自身を含む): 25474176

約数和(自身を除く): 5262811

約数列:

[1, 5, 23, 115, 181, 905, 971, 4163, 4855, 20815, 22333, 111665, 175751, 878755, 4042273, 20211365]

約数ペア:

[(1, 20211365), (5, 4042273), (23, 878755), (115, 175751), (181, 111665), (905, 22333), (971, 20815), (4163, 4855)]