165980

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{193}}^1$

素因数の和:245

約数の個数: 24

約数和(自身を含む): 358512

約数和(自身を除く): 192532

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 193, 215, 386, 430, 772, 860, 965, 1930, 3860, 8299, 16598, 33196, 41495, 82990, 165980]

約数ペア:

[(1, 165980), (2, 82990), (4, 41495), (5, 33196), (10, 16598), (20, 8299), (43, 3860), (86, 1930), (172, 965), (193, 860), (215, 772), (386, 430)]