81789129

素因数分解:

$3^3\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{139}}^1$

素因数の和:235

約数の個数: 64

約数和(自身を含む): 136192000

約数和(自身を除く): 54402871

約数列:

[1, 3, 9, 19, 27, 31, 37, 57, 93, 111, 139, 171, 279, 333, 417, 513, 589, 703, 837, 999, 1147, 1251, 1767, 2109, 2641, 3441, 3753, 4309, 5143, 5301, 6327, 7923, 10323, 12927, 15429, 15903, 18981, 21793, 23769, 30969, 38781, 46287, 65379, 71307, 81871, 97717, 116343, 138861, 159433, 196137, 245613, 293151, 478299, 588411, 736839, 879453, 1434897, 2210517, 2638359, 3029227, 4304691, 9087681, 27263043, 81789129]

約数ペア:

[(1, 81789129), (3, 27263043), (9, 9087681), (19, 4304691), (27, 3029227), (31, 2638359), (37, 2210517), (57, 1434897), (93, 879453), (111, 736839), (139, 588411), (171, 478299), (279, 293151), (333, 245613), (417, 196137), (513, 159433), (589, 138861), (703, 116343), (837, 97717), (999, 81871), (1147, 71307), (1251, 65379), (1767, 46287), (2109, 38781), (2641, 30969), (3441, 23769), (3753, 21793), (4309, 18981), (5143, 15903), (5301, 15429), (6327, 12927), (7923, 10323)]