66390140

素因数分解:

$2^2\times 5^1\times {\mathrm{1549}}^1\times {\mathrm{2143}}^1$

素因数の和:3701

約数の個数: 24

約数和(自身を含む): 139574400

約数和(自身を除く): 73184260

約数列:

[1, 2, 4, 5, 10, 20, 1549, 2143, 3098, 4286, 6196, 7745, 8572, 10715, 15490, 21430, 30980, 42860, 3319507, 6639014, 13278028, 16597535, 33195070, 66390140]

約数ペア:

[(1, 66390140), (2, 33195070), (4, 16597535), (5, 13278028), (10, 6639014), (20, 3319507), (1549, 42860), (2143, 30980), (3098, 21430), (4286, 15490), (6196, 10715), (7745, 8572)]