18730215

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{97}}^1\times {\mathrm{613}}^1$

素因数の和:728

約数の個数: 48

約数和(自身を含む): 37547328

約数和(自身を除く): 18817113

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 97, 105, 291, 315, 485, 613, 679, 873, 1455, 1839, 2037, 3065, 3395, 4291, 4365, 5517, 6111, 9195, 10185, 12873, 21455, 27585, 30555, 38619, 59461, 64365, 178383, 193095, 297305, 416227, 535149, 891915, 1248681, 2081135, 2675745, 3746043, 6243405, 18730215]

約数ペア:

[(1, 18730215), (3, 6243405), (5, 3746043), (7, 2675745), (9, 2081135), (15, 1248681), (21, 891915), (35, 535149), (45, 416227), (63, 297305), (97, 193095), (105, 178383), (291, 64365), (315, 59461), (485, 38619), (613, 30555), (679, 27585), (873, 21455), (1455, 12873), (1839, 10185), (2037, 9195), (3065, 6111), (3395, 5517), (4291, 4365)]