18855824

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{269}}^1\times {\mathrm{337}}^1$

素因数の和:627

約数の個数: 40

約数和(自身を含む): 39606840

約数和(自身を除く): 20751016

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 269, 337, 538, 674, 1076, 1348, 2152, 2696, 3497, 4304, 4381, 5392, 6994, 8762, 13988, 17524, 27976, 35048, 55952, 70096, 90653, 181306, 362612, 725224, 1178489, 1450448, 2356978, 4713956, 9427912, 18855824]

約数ペア:

[(1, 18855824), (2, 9427912), (4, 4713956), (8, 2356978), (13, 1450448), (16, 1178489), (26, 725224), (52, 362612), (104, 181306), (208, 90653), (269, 70096), (337, 55952), (538, 35048), (674, 27976), (1076, 17524), (1348, 13988), (2152, 8762), (2696, 6994), (3497, 5392), (4304, 4381)]