12840789

素因数分解:

$3^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1$

素因数の和:122

約数の個数: 48

約数和(自身を含む): 20613120

約数和(自身を除く): 7772331

約数列:

[1, 3, 13, 19, 31, 39, 43, 57, 93, 129, 169, 247, 403, 507, 559, 589, 741, 817, 1209, 1333, 1677, 1767, 2451, 3211, 3999, 5239, 7267, 7657, 9633, 10621, 15717, 17329, 21801, 22971, 25327, 31863, 51987, 75981, 99541, 138073, 225277, 298623, 329251, 414219, 675831, 987753, 4280263, 12840789]

約数ペア:

[(1, 12840789), (3, 4280263), (13, 987753), (19, 675831), (31, 414219), (39, 329251), (43, 298623), (57, 225277), (93, 138073), (129, 99541), (169, 75981), (247, 51987), (403, 31863), (507, 25327), (559, 22971), (589, 21801), (741, 17329), (817, 15717), (1209, 10621), (1333, 9633), (1677, 7657), (1767, 7267), (2451, 5239), (3211, 3999)]