20770155

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{709}}^1$

素因数の和:761

約数の個数: 64

約数和(自身を含む): 43622400

約数和(自身を除く): 22852245

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 31, 35, 45, 63, 93, 105, 135, 155, 189, 217, 279, 315, 465, 651, 709, 837, 945, 1085, 1395, 1953, 2127, 3255, 3545, 4185, 4963, 5859, 6381, 9765, 10635, 14889, 19143, 21979, 24815, 29295, 31905, 44667, 65937, 74445, 95715, 109895, 134001, 153853, 197811, 223335, 329685, 461559, 593433, 670005, 769265, 989055, 1384677, 2307795, 2967165, 4154031, 6923385, 20770155]

約数ペア:

[(1, 20770155), (3, 6923385), (5, 4154031), (7, 2967165), (9, 2307795), (15, 1384677), (21, 989055), (27, 769265), (31, 670005), (35, 593433), (45, 461559), (63, 329685), (93, 223335), (105, 197811), (135, 153853), (155, 134001), (189, 109895), (217, 95715), (279, 74445), (315, 65937), (465, 44667), (651, 31905), (709, 29295), (837, 24815), (945, 21979), (1085, 19143), (1395, 14889), (1953, 10635), (2127, 9765), (3255, 6381), (3545, 5859), (4185, 4963)]