81906960

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{101}}^1\times {\mathrm{109}}^1$

素因数の和:257

約数の個数: 160

約数和(自身を含む): 267125760

約数和(自身を除く): 185218800

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 31, 40, 48, 60, 62, 80, 93, 101, 109, 120, 124, 155, 186, 202, 218, 240, 248, 303, 310, 327, 372, 404, 436, 465, 496, 505, 545, 606, 620, 654, 744, 808, 872, 930, 1010, 1090, 1212, 1240, 1308, 1488, 1515, 1616, 1635, 1744, 1860, 2020, 2180, 2424, 2480, 2616, 3030, 3131, 3270, 3379, 3720, 4040, 4360, 4848, 5232, 6060, 6262, 6540, 6758, 7440, 8080, 8720, 9393, 10137, 11009, 12120, 12524, 13080, 13516, 15655, 16895, 18786, 20274, 22018, 24240, 25048, 26160, 27032, 31310, 33027, 33790, 37572, 40548, 44036, 46965, 50096, 50685, 54064, 55045, 62620, 66054, 67580, 75144, 81096, 88072, 93930, 101370, 110090, 125240, 132108, 135160, 150288, 162192, 165135, 176144, 187860, 202740, 220180, 250480, 264216, 270320, 330270, 341279, 375720, 405480, 440360, 528432, 660540, 682558, 751440, 810960, 880720, 1023837, 1321080, 1365116, 1706395, 2047674, 2642160, 2730232, 3412790, 4095348, 5119185, 5460464, 6825580, 8190696, 10238370, 13651160, 16381392, 20476740, 27302320, 40953480, 81906960]

約数ペア:

[(1, 81906960), (2, 40953480), (3, 27302320), (4, 20476740), (5, 16381392), (6, 13651160), (8, 10238370), (10, 8190696), (12, 6825580), (15, 5460464), (16, 5119185), (20, 4095348), (24, 3412790), (30, 2730232), (31, 2642160), (40, 2047674), (48, 1706395), (60, 1365116), (62, 1321080), (80, 1023837), (93, 880720), (101, 810960), (109, 751440), (120, 682558), (124, 660540), (155, 528432), (186, 440360), (202, 405480), (218, 375720), (240, 341279), (248, 330270), (303, 270320), (310, 264216), (327, 250480), (372, 220180), (404, 202740), (436, 187860), (465, 176144), (496, 165135), (505, 162192), (545, 150288), (606, 135160), (620, 132108), (654, 125240), (744, 110090), (808, 101370), (872, 93930), (930, 88072), (1010, 81096), (1090, 75144), (1212, 67580), (1240, 66054), (1308, 62620), (1488, 55045), (1515, 54064), (1616, 50685), (1635, 50096), (1744, 46965), (1860, 44036), (2020, 40548), (2180, 37572), (2424, 33790), (2480, 33027), (2616, 31310), (3030, 27032), (3131, 26160), (3270, 25048), (3379, 24240), (3720, 22018), (4040, 20274), (4360, 18786), (4848, 16895), (5232, 15655), (6060, 13516), (6262, 13080), (6540, 12524), (6758, 12120), (7440, 11009), (8080, 10137), (8720, 9393)]