21333720

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{139}}^1\times {\mathrm{1279}}^1$

素因数の和:1432

約数の個数: 64

約数和(自身を含む): 64512000

約数和(自身を除く): 43178280

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 139, 278, 417, 556, 695, 834, 1112, 1279, 1390, 1668, 2085, 2558, 2780, 3336, 3837, 4170, 5116, 5560, 6395, 7674, 8340, 10232, 12790, 15348, 16680, 19185, 25580, 30696, 38370, 51160, 76740, 153480, 177781, 355562, 533343, 711124, 888905, 1066686, 1422248, 1777810, 2133372, 2666715, 3555620, 4266744, 5333430, 7111240, 10666860, 21333720]

約数ペア:

[(1, 21333720), (2, 10666860), (3, 7111240), (4, 5333430), (5, 4266744), (6, 3555620), (8, 2666715), (10, 2133372), (12, 1777810), (15, 1422248), (20, 1066686), (24, 888905), (30, 711124), (40, 533343), (60, 355562), (120, 177781), (139, 153480), (278, 76740), (417, 51160), (556, 38370), (695, 30696), (834, 25580), (1112, 19185), (1279, 16680), (1390, 15348), (1668, 12790), (2085, 10232), (2558, 8340), (2780, 7674), (3336, 6395), (3837, 5560), (4170, 5116)]