28195258

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{79}}^1$

素因数の和:191

約数の個数: 64

約数和(自身を含む): 55157760

約数和(自身を除く): 26962502

約数列:

[1, 2, 7, 13, 14, 26, 37, 53, 74, 79, 91, 106, 158, 182, 259, 371, 481, 518, 553, 689, 742, 962, 1027, 1106, 1378, 1961, 2054, 2923, 3367, 3922, 4187, 4823, 5846, 6734, 7189, 8374, 9646, 13727, 14378, 20461, 25493, 27454, 29309, 37999, 40922, 50986, 54431, 58618, 75998, 108862, 154919, 178451, 265993, 309838, 356902, 381017, 531986, 762034, 1084433, 2013947, 2168866, 4027894, 14097629, 28195258]

約数ペア:

[(1, 28195258), (2, 14097629), (7, 4027894), (13, 2168866), (14, 2013947), (26, 1084433), (37, 762034), (53, 531986), (74, 381017), (79, 356902), (91, 309838), (106, 265993), (158, 178451), (182, 154919), (259, 108862), (371, 75998), (481, 58618), (518, 54431), (553, 50986), (689, 40922), (742, 37999), (962, 29309), (1027, 27454), (1106, 25493), (1378, 20461), (1961, 14378), (2054, 13727), (2923, 9646), (3367, 8374), (3922, 7189), (4187, 6734), (4823, 5846)]