21075770

素因数分解:

$2^1\times 5^1\times {\mathrm{409}}^1\times {\mathrm{5153}}^1$

素因数の和:5569

約数の個数: 16

約数和(自身を含む): 38036520

約数和(自身を除く): 16960750

約数列:

[1, 2, 5, 10, 409, 818, 2045, 4090, 5153, 10306, 25765, 51530, 2107577, 4215154, 10537885, 21075770]

約数ペア:

[(1, 21075770), (2, 10537885), (5, 4215154), (10, 2107577), (409, 51530), (818, 25765), (2045, 10306), (4090, 5153)]