21121569

素因数分解:

$3^2\times 7^1\times {\mathrm{89}}^1\times {\mathrm{3767}}^1$

素因数の和:3869

約数の個数: 24

約数和(自身を含む): 35268480

約数和(自身を除く): 14146911

約数列:

[1, 3, 7, 9, 21, 63, 89, 267, 623, 801, 1869, 3767, 5607, 11301, 26369, 33903, 79107, 237321, 335263, 1005789, 2346841, 3017367, 7040523, 21121569]

約数ペア:

[(1, 21121569), (3, 7040523), (7, 3017367), (9, 2346841), (21, 1005789), (63, 335263), (89, 237321), (267, 79107), (623, 33903), (801, 26369), (1869, 11301), (3767, 5607)]