21403540

素因数分解:

$2^2\times 5^1\times {\mathrm{223}}^1\times {\mathrm{4799}}^1$

素因数の和:5031

約数の個数: 24

約数和(自身を含む): 45158400

約数和(自身を除く): 23754860

約数列:

[1, 2, 4, 5, 10, 20, 223, 446, 892, 1115, 2230, 4460, 4799, 9598, 19196, 23995, 47990, 95980, 1070177, 2140354, 4280708, 5350885, 10701770, 21403540]

約数ペア:

[(1, 21403540), (2, 10701770), (4, 5350885), (5, 4280708), (10, 2140354), (20, 1070177), (223, 95980), (446, 47990), (892, 23995), (1115, 19196), (2230, 9598), (4460, 4799)]