21475390

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{52379}}^1$

素因数の和:52427

約数の個数: 16

約数和(自身を含む): 39599280

約数和(自身を除く): 18123890

約数列:

[1, 2, 5, 10, 41, 82, 205, 410, 52379, 104758, 261895, 523790, 2147539, 4295078, 10737695, 21475390]

約数ペア:

[(1, 21475390), (2, 10737695), (5, 4295078), (10, 2147539), (41, 523790), (82, 261895), (205, 104758), (410, 52379)]