19802930

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{3581}}^1$

素因数の和:3674

約数の個数: 32

約数和(自身を含む): 41264640

約数和(自身を除く): 21461710

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 79, 158, 395, 553, 790, 1106, 2765, 3581, 5530, 7162, 17905, 25067, 35810, 50134, 125335, 250670, 282899, 565798, 1414495, 1980293, 2828990, 3960586, 9901465, 19802930]

約数ペア:

[(1, 19802930), (2, 9901465), (5, 3960586), (7, 2828990), (10, 1980293), (14, 1414495), (35, 565798), (70, 282899), (79, 250670), (158, 125335), (395, 50134), (553, 35810), (790, 25067), (1106, 17905), (2765, 7162), (3581, 5530)]