19396540

素因数分解:

$2^2\times 5^1\times {\mathrm{223}}^1\times {\mathrm{4349}}^1$

素因数の和:4581

約数の個数: 24

約数和(自身を含む): 40924800

約数和(自身を除く): 21528260

約数列:

[1, 2, 4, 5, 10, 20, 223, 446, 892, 1115, 2230, 4349, 4460, 8698, 17396, 21745, 43490, 86980, 969827, 1939654, 3879308, 4849135, 9698270, 19396540]

約数ペア:

[(1, 19396540), (2, 9698270), (4, 4849135), (5, 3879308), (10, 1939654), (20, 969827), (223, 86980), (446, 43490), (892, 21745), (1115, 17396), (2230, 8698), (4349, 4460)]