20993752

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{337}}^1\times {\mathrm{599}}^1$

素因数の和:955

約数の個数: 32

約数和(自身を含む): 42588000

約数和(自身を除く): 21594248

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 337, 599, 674, 1198, 1348, 2396, 2696, 4381, 4792, 7787, 8762, 15574, 17524, 31148, 35048, 62296, 201863, 403726, 807452, 1614904, 2624219, 5248438, 10496876, 20993752]

約数ペア:

[(1, 20993752), (2, 10496876), (4, 5248438), (8, 2624219), (13, 1614904), (26, 807452), (52, 403726), (104, 201863), (337, 62296), (599, 35048), (674, 31148), (1198, 17524), (1348, 15574), (2396, 8762), (2696, 7787), (4381, 4792)]