20590479

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{811}}^1$

素因数の和:868

約数の個数: 48

約数和(自身を含む): 37832704

約数和(自身を除く): 17242225

約数列:

[1, 3, 7, 9, 13, 21, 31, 39, 63, 91, 93, 117, 217, 273, 279, 403, 651, 811, 819, 1209, 1953, 2433, 2821, 3627, 5677, 7299, 8463, 10543, 17031, 25141, 25389, 31629, 51093, 73801, 75423, 94887, 175987, 221403, 226269, 326833, 527961, 664209, 980499, 1583883, 2287831, 2941497, 6863493, 20590479]

約数ペア:

[(1, 20590479), (3, 6863493), (7, 2941497), (9, 2287831), (13, 1583883), (21, 980499), (31, 664209), (39, 527961), (63, 326833), (91, 226269), (93, 221403), (117, 175987), (217, 94887), (273, 75423), (279, 73801), (403, 51093), (651, 31629), (811, 25389), (819, 25141), (1209, 17031), (1953, 10543), (2433, 8463), (2821, 7299), (3627, 5677)]