20889813

素因数分解:

$3^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{11177}}^1$

素因数の和:11276

約数の個数: 16

約数和(自身を含む): 32192640

約数和(自身を除く): 11302827

約数列:

[1, 3, 7, 21, 89, 267, 623, 1869, 11177, 33531, 78239, 234717, 994753, 2984259, 6963271, 20889813]

約数ペア:

[(1, 20889813), (3, 6963271), (7, 2984259), (21, 994753), (89, 234717), (267, 78239), (623, 33531), (1869, 11177)]