18872805

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{97}}^1\times {\mathrm{109}}^1$

素因数の和:238

約数の個数: 64

約数和(自身を含む): 37255680

約数和(自身を除く): 18382875

約数列:

[1, 3, 5, 7, 15, 17, 21, 35, 51, 85, 97, 105, 109, 119, 255, 291, 327, 357, 485, 545, 595, 679, 763, 1455, 1635, 1649, 1785, 1853, 2037, 2289, 3395, 3815, 4947, 5559, 8245, 9265, 10185, 10573, 11445, 11543, 12971, 24735, 27795, 31719, 34629, 38913, 52865, 57715, 64855, 74011, 158595, 173145, 179741, 194565, 222033, 370055, 539223, 898705, 1110165, 1258187, 2696115, 3774561, 6290935, 18872805]

約数ペア:

[(1, 18872805), (3, 6290935), (5, 3774561), (7, 2696115), (15, 1258187), (17, 1110165), (21, 898705), (35, 539223), (51, 370055), (85, 222033), (97, 194565), (105, 179741), (109, 173145), (119, 158595), (255, 74011), (291, 64855), (327, 57715), (357, 52865), (485, 38913), (545, 34629), (595, 31719), (679, 27795), (763, 24735), (1455, 12971), (1635, 11543), (1649, 11445), (1785, 10573), (1853, 10185), (2037, 9265), (2289, 8245), (3395, 5559), (3815, 4947)]