28721220

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43517}}^1$

素因数の和:43540

約数の個数: 48

約数和(自身を含む): 87732288

約数和(自身を除く): 59011068

約数列:

[1, 2, 3, 4, 5, 6, 10, 11, 12, 15, 20, 22, 30, 33, 44, 55, 60, 66, 110, 132, 165, 220, 330, 660, 43517, 87034, 130551, 174068, 217585, 261102, 435170, 478687, 522204, 652755, 870340, 957374, 1305510, 1436061, 1914748, 2393435, 2611020, 2872122, 4786870, 5744244, 7180305, 9573740, 14360610, 28721220]

約数ペア:

[(1, 28721220), (2, 14360610), (3, 9573740), (4, 7180305), (5, 5744244), (6, 4786870), (10, 2872122), (11, 2611020), (12, 2393435), (15, 1914748), (20, 1436061), (22, 1305510), (30, 957374), (33, 870340), (44, 652755), (55, 522204), (60, 478687), (66, 435170), (110, 261102), (132, 217585), (165, 174068), (220, 130551), (330, 87034), (660, 43517)]