19826440

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{11527}}^1$

素因数の和:11581

約数の個数: 32

約数和(自身を含む): 45650880

約数和(自身を除く): 25824440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 11527, 23054, 46108, 57635, 92216, 115270, 230540, 461080, 495661, 991322, 1982644, 2478305, 3965288, 4956610, 9913220, 19826440]

約数ペア:

[(1, 19826440), (2, 9913220), (4, 4956610), (5, 3965288), (8, 2478305), (10, 1982644), (20, 991322), (40, 495661), (43, 461080), (86, 230540), (172, 115270), (215, 92216), (344, 57635), (430, 46108), (860, 23054), (1720, 11527)]