20493040

素因数分解:

$2^4\times 5^1\times {\mathrm{256163}}^1$

素因数の和:256176

約数の個数: 20

約数和(自身を含む): 47646504

約数和(自身を除く): 27153464

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 256163, 512326, 1024652, 1280815, 2049304, 2561630, 4098608, 5123260, 10246520, 20493040]

約数ペア:

[(1, 20493040), (2, 10246520), (4, 5123260), (5, 4098608), (8, 2561630), (10, 2049304), (16, 1280815), (20, 1024652), (40, 512326), (80, 256163)]