17856855

素因数分解:

$3^7\times 5^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1$

素因数の和:120

約数の個数: 64

約数和(自身を含む): 34007040

約数和(自身を除く): 16150185

約数列:

[1, 3, 5, 9, 15, 23, 27, 45, 69, 71, 81, 115, 135, 207, 213, 243, 345, 355, 405, 621, 639, 729, 1035, 1065, 1215, 1633, 1863, 1917, 2187, 3105, 3195, 3645, 4899, 5589, 5751, 8165, 9315, 9585, 10935, 14697, 16767, 17253, 24495, 27945, 28755, 44091, 50301, 51759, 73485, 83835, 86265, 132273, 155277, 220455, 251505, 258795, 396819, 661365, 776385, 1190457, 1984095, 3571371, 5952285, 17856855]

約数ペア:

[(1, 17856855), (3, 5952285), (5, 3571371), (9, 1984095), (15, 1190457), (23, 776385), (27, 661365), (45, 396819), (69, 258795), (71, 251505), (81, 220455), (115, 155277), (135, 132273), (207, 86265), (213, 83835), (243, 73485), (345, 51759), (355, 50301), (405, 44091), (621, 28755), (639, 27945), (729, 24495), (1035, 17253), (1065, 16767), (1215, 14697), (1633, 10935), (1863, 9585), (1917, 9315), (2187, 8165), (3105, 5751), (3195, 5589), (3645, 4899)]