19181715

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{83}}^1$

素因数の和:200

約数の個数: 64

約数和(自身を含む): 37158912

約数和(自身を除く): 17977197

約数列:

[1, 3, 5, 7, 15, 21, 31, 35, 71, 83, 93, 105, 155, 213, 217, 249, 355, 415, 465, 497, 581, 651, 1065, 1085, 1245, 1491, 1743, 2201, 2485, 2573, 2905, 3255, 5893, 6603, 7455, 7719, 8715, 11005, 12865, 15407, 17679, 18011, 29465, 33015, 38595, 41251, 46221, 54033, 77035, 88395, 90055, 123753, 182683, 206255, 231105, 270165, 548049, 618765, 913415, 1278781, 2740245, 3836343, 6393905, 19181715]

約数ペア:

[(1, 19181715), (3, 6393905), (5, 3836343), (7, 2740245), (15, 1278781), (21, 913415), (31, 618765), (35, 548049), (71, 270165), (83, 231105), (93, 206255), (105, 182683), (155, 123753), (213, 90055), (217, 88395), (249, 77035), (355, 54033), (415, 46221), (465, 41251), (497, 38595), (581, 33015), (651, 29465), (1065, 18011), (1085, 17679), (1245, 15407), (1491, 12865), (1743, 11005), (2201, 8715), (2485, 7719), (2573, 7455), (2905, 6603), (3255, 5893)]