20395980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{10301}}^1$

素因数の和:10327

約数の個数: 72

約数和(自身を含む): 67498704

約数和(自身を除く): 47102724

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, 110, 132, 165, 180, 198, 220, 330, 396, 495, 660, 990, 1980, 10301, 20602, 30903, 41204, 51505, 61806, 92709, 103010, 113311, 123612, 154515, 185418, 206020, 226622, 309030, 339933, 370836, 453244, 463545, 566555, 618060, 679866, 927090, 1019799, 1133110, 1359732, 1699665, 1854180, 2039598, 2266220, 3399330, 4079196, 5098995, 6798660, 10197990, 20395980]

約数ペア:

[(1, 20395980), (2, 10197990), (3, 6798660), (4, 5098995), (5, 4079196), (6, 3399330), (9, 2266220), (10, 2039598), (11, 1854180), (12, 1699665), (15, 1359732), (18, 1133110), (20, 1019799), (22, 927090), (30, 679866), (33, 618060), (36, 566555), (44, 463545), (45, 453244), (55, 370836), (60, 339933), (66, 309030), (90, 226622), (99, 206020), (110, 185418), (132, 154515), (165, 123612), (180, 113311), (198, 103010), (220, 92709), (330, 61806), (396, 51505), (495, 41204), (660, 30903), (990, 20602), (1980, 10301)]