21173080

素因数分解:

$2^3\times 5^1\times {\mathrm{529327}}^1$

素因数の和:529338

約数の個数: 16

約数和(自身を含む): 47639520

約数和(自身を除く): 26466440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 529327, 1058654, 2117308, 2646635, 4234616, 5293270, 10586540, 21173080]

約数ペア:

[(1, 21173080), (2, 10586540), (4, 5293270), (5, 4234616), (8, 2646635), (10, 2117308), (20, 1058654), (40, 529327)]