21797820

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{109}}^1$

素因数の和:236

約数の個数: 144

約数和(自身を含む): 73513440

約数和(自身を除く): 51715620

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 30, 33, 36, 44, 45, 55, 60, 66, 90, 99, 101, 109, 110, 132, 165, 180, 198, 202, 218, 220, 303, 327, 330, 396, 404, 436, 495, 505, 545, 606, 654, 660, 909, 981, 990, 1010, 1090, 1111, 1199, 1212, 1308, 1515, 1635, 1818, 1962, 1980, 2020, 2180, 2222, 2398, 3030, 3270, 3333, 3597, 3636, 3924, 4444, 4545, 4796, 4905, 5555, 5995, 6060, 6540, 6666, 7194, 9090, 9810, 9999, 10791, 11009, 11110, 11990, 13332, 14388, 16665, 17985, 18180, 19620, 19998, 21582, 22018, 22220, 23980, 33027, 33330, 35970, 39996, 43164, 44036, 49995, 53955, 55045, 66054, 66660, 71940, 99081, 99990, 107910, 110090, 121099, 132108, 165135, 198162, 199980, 215820, 220180, 242198, 330270, 363297, 396324, 484396, 495405, 605495, 660540, 726594, 990810, 1089891, 1210990, 1453188, 1816485, 1981620, 2179782, 2421980, 3632970, 4359564, 5449455, 7265940, 10898910, 21797820]

約数ペア:

[(1, 21797820), (2, 10898910), (3, 7265940), (4, 5449455), (5, 4359564), (6, 3632970), (9, 2421980), (10, 2179782), (11, 1981620), (12, 1816485), (15, 1453188), (18, 1210990), (20, 1089891), (22, 990810), (30, 726594), (33, 660540), (36, 605495), (44, 495405), (45, 484396), (55, 396324), (60, 363297), (66, 330270), (90, 242198), (99, 220180), (101, 215820), (109, 199980), (110, 198162), (132, 165135), (165, 132108), (180, 121099), (198, 110090), (202, 107910), (218, 99990), (220, 99081), (303, 71940), (327, 66660), (330, 66054), (396, 55045), (404, 53955), (436, 49995), (495, 44036), (505, 43164), (545, 39996), (606, 35970), (654, 33330), (660, 33027), (909, 23980), (981, 22220), (990, 22018), (1010, 21582), (1090, 19998), (1111, 19620), (1199, 18180), (1212, 17985), (1308, 16665), (1515, 14388), (1635, 13332), (1818, 11990), (1962, 11110), (1980, 11009), (2020, 10791), (2180, 9999), (2222, 9810), (2398, 9090), (3030, 7194), (3270, 6666), (3333, 6540), (3597, 6060), (3636, 5995), (3924, 5555), (4444, 4905), (4545, 4796)]