20981916

素因数分解:

$2^2\times 3^4\times {\mathrm{31}}^1\times {\mathrm{2089}}^1$

素因数の和:2136

約数の個数: 60

約数和(自身を含む): 56647360

約数和(自身を除く): 35665444

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 31, 36, 54, 62, 81, 93, 108, 124, 162, 186, 279, 324, 372, 558, 837, 1116, 1674, 2089, 2511, 3348, 4178, 5022, 6267, 8356, 10044, 12534, 18801, 25068, 37602, 56403, 64759, 75204, 112806, 129518, 169209, 194277, 225612, 259036, 338418, 388554, 582831, 676836, 777108, 1165662, 1748493, 2331324, 3496986, 5245479, 6993972, 10490958, 20981916]

約数ペア:

[(1, 20981916), (2, 10490958), (3, 6993972), (4, 5245479), (6, 3496986), (9, 2331324), (12, 1748493), (18, 1165662), (27, 777108), (31, 676836), (36, 582831), (54, 388554), (62, 338418), (81, 259036), (93, 225612), (108, 194277), (124, 169209), (162, 129518), (186, 112806), (279, 75204), (324, 64759), (372, 56403), (558, 37602), (837, 25068), (1116, 18801), (1674, 12534), (2089, 10044), (2511, 8356), (3348, 6267), (4178, 5022)]