81259713

素因数分解:

$3^3\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{97}}^1$

素因数の和:219

約数の個数: 64

約数和(自身を含む): 135475200

約数和(自身を除く): 54215487

約数列:

[1, 3, 9, 19, 23, 27, 57, 69, 71, 97, 171, 207, 213, 291, 437, 513, 621, 639, 873, 1311, 1349, 1633, 1843, 1917, 2231, 2619, 3933, 4047, 4899, 5529, 6693, 6887, 11799, 12141, 14697, 16587, 20079, 20661, 31027, 36423, 42389, 44091, 49761, 60237, 61983, 93081, 127167, 130853, 158401, 185949, 279243, 381501, 392559, 475203, 837729, 1144503, 1177677, 1425609, 3009619, 3533031, 4276827, 9028857, 27086571, 81259713]

約数ペア:

[(1, 81259713), (3, 27086571), (9, 9028857), (19, 4276827), (23, 3533031), (27, 3009619), (57, 1425609), (69, 1177677), (71, 1144503), (97, 837729), (171, 475203), (207, 392559), (213, 381501), (291, 279243), (437, 185949), (513, 158401), (621, 130853), (639, 127167), (873, 93081), (1311, 61983), (1349, 60237), (1633, 49761), (1843, 44091), (1917, 42389), (2231, 36423), (2619, 31027), (3933, 20661), (4047, 20079), (4899, 16587), (5529, 14697), (6693, 12141), (6887, 11799)]