81618660

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{14627}}^1$

素因数の和:14673

約数の個数: 72

約数和(自身を含む): 255580416

約数和(自身を除く): 173961756

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 31, 36, 45, 60, 62, 90, 93, 124, 155, 180, 186, 279, 310, 372, 465, 558, 620, 930, 1116, 1395, 1860, 2790, 5580, 14627, 29254, 43881, 58508, 73135, 87762, 131643, 146270, 175524, 219405, 263286, 292540, 438810, 453437, 526572, 658215, 877620, 906874, 1316430, 1360311, 1813748, 2267185, 2632860, 2720622, 4080933, 4534370, 5441244, 6801555, 8161866, 9068740, 13603110, 16323732, 20404665, 27206220, 40809330, 81618660]

約数ペア:

[(1, 81618660), (2, 40809330), (3, 27206220), (4, 20404665), (5, 16323732), (6, 13603110), (9, 9068740), (10, 8161866), (12, 6801555), (15, 5441244), (18, 4534370), (20, 4080933), (30, 2720622), (31, 2632860), (36, 2267185), (45, 1813748), (60, 1360311), (62, 1316430), (90, 906874), (93, 877620), (124, 658215), (155, 526572), (180, 453437), (186, 438810), (279, 292540), (310, 263286), (372, 219405), (465, 175524), (558, 146270), (620, 131643), (930, 87762), (1116, 73135), (1395, 58508), (1860, 43881), (2790, 29254), (5580, 14627)]