21248730

素因数分解:

$2^1\times 3^4\times 5^1\times {\mathrm{37}}^1\times {\mathrm{709}}^1$

素因数の和:765

約数の個数: 80

約数和(自身を含む): 58762440

約数和(自身を除く): 37513710

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 37, 45, 54, 74, 81, 90, 111, 135, 162, 185, 222, 270, 333, 370, 405, 555, 666, 709, 810, 999, 1110, 1418, 1665, 1998, 2127, 2997, 3330, 3545, 4254, 4995, 5994, 6381, 7090, 9990, 10635, 12762, 14985, 19143, 21270, 26233, 29970, 31905, 38286, 52466, 57429, 63810, 78699, 95715, 114858, 131165, 157398, 191430, 236097, 262330, 287145, 393495, 472194, 574290, 708291, 786990, 1180485, 1416582, 2124873, 2360970, 3541455, 4249746, 7082910, 10624365, 21248730]

約数ペア:

[(1, 21248730), (2, 10624365), (3, 7082910), (5, 4249746), (6, 3541455), (9, 2360970), (10, 2124873), (15, 1416582), (18, 1180485), (27, 786990), (30, 708291), (37, 574290), (45, 472194), (54, 393495), (74, 287145), (81, 262330), (90, 236097), (111, 191430), (135, 157398), (162, 131165), (185, 114858), (222, 95715), (270, 78699), (333, 63810), (370, 57429), (405, 52466), (555, 38286), (666, 31905), (709, 29970), (810, 26233), (999, 21270), (1110, 19143), (1418, 14985), (1665, 12762), (1998, 10635), (2127, 9990), (2997, 7090), (3330, 6381), (3545, 5994), (4254, 4995)]