18907185

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{163}}^1$

素因数の和:238

約数の個数: 64

約数和(自身を含む): 35896320

約数和(自身を除く): 16989135

約数列:

[1, 3, 5, 11, 15, 19, 33, 37, 55, 57, 95, 111, 163, 165, 185, 209, 285, 407, 489, 555, 627, 703, 815, 1045, 1221, 1793, 2035, 2109, 2445, 3097, 3135, 3515, 5379, 6031, 6105, 7733, 8965, 9291, 10545, 15485, 18093, 23199, 26895, 30155, 34067, 38665, 46455, 66341, 90465, 102201, 114589, 115995, 170335, 199023, 331705, 343767, 511005, 572945, 995115, 1260479, 1718835, 3781437, 6302395, 18907185]

約数ペア:

[(1, 18907185), (3, 6302395), (5, 3781437), (11, 1718835), (15, 1260479), (19, 995115), (33, 572945), (37, 511005), (55, 343767), (57, 331705), (95, 199023), (111, 170335), (163, 115995), (165, 114589), (185, 102201), (209, 90465), (285, 66341), (407, 46455), (489, 38665), (555, 34067), (627, 30155), (703, 26895), (815, 23199), (1045, 18093), (1221, 15485), (1793, 10545), (2035, 9291), (2109, 8965), (2445, 7733), (3097, 6105), (3135, 6031), (3515, 5379)]