18205780

素因数分解:

$2^2\times 5^1\times {\mathrm{271}}^1\times {\mathrm{3359}}^1$

素因数の和:3639

約数の個数: 24

約数和(自身を含む): 38384640

約数和(自身を除く): 20178860

約数列:

[1, 2, 4, 5, 10, 20, 271, 542, 1084, 1355, 2710, 3359, 5420, 6718, 13436, 16795, 33590, 67180, 910289, 1820578, 3641156, 4551445, 9102890, 18205780]

約数ペア:

[(1, 18205780), (2, 9102890), (4, 4551445), (5, 3641156), (10, 1820578), (20, 910289), (271, 67180), (542, 33590), (1084, 16795), (1355, 13436), (2710, 6718), (3359, 5420)]