81155340

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{2221}}^1$

素因数の和:2272

約数の個数: 144

約数和(自身を含む): 291170880

約数和(自身を除く): 210015540

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 29, 30, 35, 36, 42, 45, 58, 60, 63, 70, 84, 87, 90, 105, 116, 126, 140, 145, 174, 180, 203, 210, 252, 261, 290, 315, 348, 406, 420, 435, 522, 580, 609, 630, 812, 870, 1015, 1044, 1218, 1260, 1305, 1740, 1827, 2030, 2221, 2436, 2610, 3045, 3654, 4060, 4442, 5220, 6090, 6663, 7308, 8884, 9135, 11105, 12180, 13326, 15547, 18270, 19989, 22210, 26652, 31094, 33315, 36540, 39978, 44420, 46641, 62188, 64409, 66630, 77735, 79956, 93282, 99945, 128818, 133260, 139923, 155470, 186564, 193227, 199890, 233205, 257636, 279846, 310940, 322045, 386454, 399780, 450863, 466410, 559692, 579681, 644090, 699615, 772908, 901726, 932820, 966135, 1159362, 1288180, 1352589, 1399230, 1803452, 1932270, 2254315, 2318724, 2705178, 2798460, 2898405, 3864540, 4057767, 4508630, 5410356, 5796810, 6762945, 8115534, 9017260, 11593620, 13525890, 16231068, 20288835, 27051780, 40577670, 81155340]

約数ペア:

[(1, 81155340), (2, 40577670), (3, 27051780), (4, 20288835), (5, 16231068), (6, 13525890), (7, 11593620), (9, 9017260), (10, 8115534), (12, 6762945), (14, 5796810), (15, 5410356), (18, 4508630), (20, 4057767), (21, 3864540), (28, 2898405), (29, 2798460), (30, 2705178), (35, 2318724), (36, 2254315), (42, 1932270), (45, 1803452), (58, 1399230), (60, 1352589), (63, 1288180), (70, 1159362), (84, 966135), (87, 932820), (90, 901726), (105, 772908), (116, 699615), (126, 644090), (140, 579681), (145, 559692), (174, 466410), (180, 450863), (203, 399780), (210, 386454), (252, 322045), (261, 310940), (290, 279846), (315, 257636), (348, 233205), (406, 199890), (420, 193227), (435, 186564), (522, 155470), (580, 139923), (609, 133260), (630, 128818), (812, 99945), (870, 93282), (1015, 79956), (1044, 77735), (1218, 66630), (1260, 64409), (1305, 62188), (1740, 46641), (1827, 44420), (2030, 39978), (2221, 36540), (2436, 33315), (2610, 31094), (3045, 26652), (3654, 22210), (4060, 19989), (4442, 18270), (5220, 15547), (6090, 13326), (6663, 12180), (7308, 11105), (8884, 9135)]