21188853

素因数分解:

$3^2\times 7^1\times {\mathrm{89}}^1\times {\mathrm{3779}}^1$

素因数の和:3881

約数の個数: 24

約数和(自身を含む): 35380800

約数和(自身を除く): 14191947

約数列:

[1, 3, 7, 9, 21, 63, 89, 267, 623, 801, 1869, 3779, 5607, 11337, 26453, 34011, 79359, 238077, 336331, 1008993, 2354317, 3026979, 7062951, 21188853]

約数ペア:

[(1, 21188853), (3, 7062951), (7, 3026979), (9, 2354317), (21, 1008993), (63, 336331), (89, 238077), (267, 79359), (623, 34011), (801, 26453), (1869, 11337), (3779, 5607)]