81685620

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{14639}}^1$

素因数の和:14685

約数の個数: 72

約数和(自身を含む): 255790080

約数和(自身を除く): 174104460

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, 14639, 29278, 43917, 58556, 73195, 87834, 131751, 146390, 175668, 219585, 263502, 292780, 439170, 453809, 527004, 658755, 878340, 907618, 1317510, 1361427, 1815236, 2269045, 2635020, 2722854, 4084281, 4538090, 5445708, 6807135, 8168562, 9076180, 13614270, 16337124, 20421405, 27228540, 40842810, 81685620]

約数ペア:

[(1, 81685620), (2, 40842810), (3, 27228540), (4, 20421405), (5, 16337124), (6, 13614270), (9, 9076180), (10, 8168562), (12, 6807135), (15, 5445708), (18, 4538090), (20, 4084281), (30, 2722854), (31, 2635020), (36, 2269045), (45, 1815236), (60, 1361427), (62, 1317510), (90, 907618), (93, 878340), (124, 658755), (155, 527004), (180, 453809), (186, 439170), (279, 292780), (310, 263502), (372, 219585), (465, 175668), (558, 146390), (620, 131751), (930, 87834), (1116, 73195), (1395, 58556), (1860, 43917), (2790, 29278), (5580, 14639)]