21808304

素因数分解:

$2^4\times 7^1\times {\mathrm{194717}}^1$

素因数の和:194732

約数の個数: 20

約数和(自身を含む): 48290064

約数和(自身を除く): 26481760

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 194717, 389434, 778868, 1363019, 1557736, 2726038, 3115472, 5452076, 10904152, 21808304]

約数ペア:

[(1, 21808304), (2, 10904152), (4, 5452076), (7, 3115472), (8, 2726038), (14, 1557736), (16, 1363019), (28, 778868), (56, 389434), (112, 194717)]