21272060

素因数分解:

$2^2\times 5^1\times {\mathrm{197}}^1\times {\mathrm{5399}}^1$

素因数の和:5605

約数の個数: 24

約数和(自身を含む): 44906400

約数和(自身を除く): 23634340

約数列:

[1, 2, 4, 5, 10, 20, 197, 394, 788, 985, 1970, 3940, 5399, 10798, 21596, 26995, 53990, 107980, 1063603, 2127206, 4254412, 5318015, 10636030, 21272060]

約数ペア:

[(1, 21272060), (2, 10636030), (4, 5318015), (5, 4254412), (10, 2127206), (20, 1063603), (197, 107980), (394, 53990), (788, 26995), (985, 21596), (1970, 10798), (3940, 5399)]