18896409

素因数分解:

$3^6\times 7^2\times {\mathrm{23}}^2$

素因数の和:78

約数の個数: 63

約数和(自身を含む): 34452453

約数和(自身を除く): 15556044

約数列:

[1, 3, 7, 9, 21, 23, 27, 49, 63, 69, 81, 147, 161, 189, 207, 243, 441, 483, 529, 567, 621, 729, 1127, 1323, 1449, 1587, 1701, 1863, 3381, 3703, 3969, 4347, 4761, 5103, 5589, 10143, 11109, 11907, 13041, 14283, 16767, 25921, 30429, 33327, 35721, 39123, 42849, 77763, 91287, 99981, 117369, 128547, 233289, 273861, 299943, 385641, 699867, 821583, 899829, 2099601, 2699487, 6298803, 18896409]

約数ペア:

[(1, 18896409), (3, 6298803), (7, 2699487), (9, 2099601), (21, 899829), (23, 821583), (27, 699867), (49, 385641), (63, 299943), (69, 273861), (81, 233289), (147, 128547), (161, 117369), (189, 99981), (207, 91287), (243, 77763), (441, 42849), (483, 39123), (529, 35721), (567, 33327), (621, 30429), (729, 25921), (1127, 16767), (1323, 14283), (1449, 13041), (1587, 11907), (1701, 11109), (1863, 10143), (3381, 5589), (3703, 5103), (3969, 4761)]