81755765

素因数分解:

$5^1\times 7^3\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{193}}^1$

素因数の和:251

約数の個数: 64

約数和(自身を含む): 130368000

約数和(自身を除く): 48612235

約数列:

[1, 5, 7, 13, 19, 35, 49, 65, 91, 95, 133, 193, 245, 247, 343, 455, 637, 665, 931, 965, 1235, 1351, 1715, 1729, 2509, 3185, 3667, 4459, 4655, 6517, 6755, 8645, 9457, 12103, 12545, 17563, 18335, 22295, 25669, 32585, 47285, 47671, 60515, 66199, 84721, 87815, 122941, 128345, 179683, 238355, 330995, 333697, 423605, 614705, 860587, 898415, 1257781, 1668485, 2335879, 4302935, 6288905, 11679395, 16351153, 81755765]

約数ペア:

[(1, 81755765), (5, 16351153), (7, 11679395), (13, 6288905), (19, 4302935), (35, 2335879), (49, 1668485), (65, 1257781), (91, 898415), (95, 860587), (133, 614705), (193, 423605), (245, 333697), (247, 330995), (343, 238355), (455, 179683), (637, 128345), (665, 122941), (931, 87815), (965, 84721), (1235, 66199), (1351, 60515), (1715, 47671), (1729, 47285), (2509, 32585), (3185, 25669), (3667, 22295), (4459, 18335), (4655, 17563), (6517, 12545), (6755, 12103), (8645, 9457)]