18989108

素因数分解:

$2^2\times {\mathrm{97}}^1\times {\mathrm{109}}^1\times {\mathrm{449}}^1$

素因数の和:659

約数の個数: 24

約数和(自身を含む): 33957000

約数和(自身を除く): 14967892

約数列:

[1, 2, 4, 97, 109, 194, 218, 388, 436, 449, 898, 1796, 10573, 21146, 42292, 43553, 48941, 87106, 97882, 174212, 195764, 4747277, 9494554, 18989108]

約数ペア:

[(1, 18989108), (2, 9494554), (4, 4747277), (97, 195764), (109, 174212), (194, 97882), (218, 87106), (388, 48941), (436, 43553), (449, 42292), (898, 21146), (1796, 10573)]