18869740

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{15467}}^1$

素因数の和:15537

約数の個数: 24

約数和(自身を含む): 40278672

約数和(自身を除く): 21408932

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 15467, 30934, 61868, 77335, 154670, 309340, 943487, 1886974, 3773948, 4717435, 9434870, 18869740]

約数ペア:

[(1, 18869740), (2, 9434870), (4, 4717435), (5, 3773948), (10, 1886974), (20, 943487), (61, 309340), (122, 154670), (244, 77335), (305, 61868), (610, 30934), (1220, 15467)]