64857555

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{103}}^1\times {\mathrm{1999}}^1$

素因数の和:2120

約数の個数: 48

約数和(自身を含む): 129792000

約数和(自身を除く): 64934445

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 103, 105, 309, 315, 515, 721, 927, 1545, 1999, 2163, 3605, 4635, 5997, 6489, 9995, 10815, 13993, 17991, 29985, 32445, 41979, 69965, 89955, 125937, 205897, 209895, 617691, 629685, 1029485, 1441279, 1853073, 3088455, 4323837, 7206395, 9265365, 12971511, 21619185, 64857555]

約数ペア:

[(1, 64857555), (3, 21619185), (5, 12971511), (7, 9265365), (9, 7206395), (15, 4323837), (21, 3088455), (35, 1853073), (45, 1441279), (63, 1029485), (103, 629685), (105, 617691), (309, 209895), (315, 205897), (515, 125937), (721, 89955), (927, 69965), (1545, 41979), (1999, 32445), (2163, 29985), (3605, 17991), (4635, 13993), (5997, 10815), (6489, 9995)]