21747564

素因数分解:

$2^2\times 3^2\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{563}}^1$

素因数の和:639

約数の個数: 72

約数和(自身を含む): 58509360

約数和(自身を除く): 36761796

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 29, 36, 37, 58, 74, 87, 111, 116, 148, 174, 222, 261, 333, 348, 444, 522, 563, 666, 1044, 1073, 1126, 1332, 1689, 2146, 2252, 3219, 3378, 4292, 5067, 6438, 6756, 9657, 10134, 12876, 16327, 19314, 20268, 20831, 32654, 38628, 41662, 48981, 62493, 65308, 83324, 97962, 124986, 146943, 187479, 195924, 249972, 293886, 374958, 587772, 604099, 749916, 1208198, 1812297, 2416396, 3624594, 5436891, 7249188, 10873782, 21747564]

約数ペア:

[(1, 21747564), (2, 10873782), (3, 7249188), (4, 5436891), (6, 3624594), (9, 2416396), (12, 1812297), (18, 1208198), (29, 749916), (36, 604099), (37, 587772), (58, 374958), (74, 293886), (87, 249972), (111, 195924), (116, 187479), (148, 146943), (174, 124986), (222, 97962), (261, 83324), (333, 65308), (348, 62493), (444, 48981), (522, 41662), (563, 38628), (666, 32654), (1044, 20831), (1073, 20268), (1126, 19314), (1332, 16327), (1689, 12876), (2146, 10134), (2252, 9657), (3219, 6756), (3378, 6438), (4292, 5067)]