18187540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{163}}^1\times {\mathrm{797}}^1$

素因数の和:976

約数の個数: 48

約数和(自身を含む): 43972992

約数和(自身を除く): 25785452

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 163, 326, 652, 797, 815, 1141, 1594, 1630, 2282, 3188, 3260, 3985, 4564, 5579, 5705, 7970, 11158, 11410, 15940, 22316, 22820, 27895, 55790, 111580, 129911, 259822, 519644, 649555, 909377, 1299110, 1818754, 2598220, 3637508, 4546885, 9093770, 18187540]

約数ペア:

[(1, 18187540), (2, 9093770), (4, 4546885), (5, 3637508), (7, 2598220), (10, 1818754), (14, 1299110), (20, 909377), (28, 649555), (35, 519644), (70, 259822), (140, 129911), (163, 111580), (326, 55790), (652, 27895), (797, 22820), (815, 22316), (1141, 15940), (1594, 11410), (1630, 11158), (2282, 7970), (3188, 5705), (3260, 5579), (3985, 4564)]