20171945

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{5519}}^1$

素因数の和:5584

約数の個数: 16

約数和(自身を含む): 26231040

約数和(自身を除く): 6059095

約数列:

[1, 5, 17, 43, 85, 215, 731, 3655, 5519, 27595, 93823, 237317, 469115, 1186585, 4034389, 20171945]

約数ペア:

[(1, 20171945), (5, 4034389), (17, 1186585), (43, 469115), (85, 237317), (215, 93823), (731, 27595), (3655, 5519)]