20017904

素因数分解:

$2^4\times {\mathrm{269}}^1\times {\mathrm{4651}}^1$

素因数の和:4928

約数の個数: 20

約数和(自身を含む): 38937240

約数和(自身を除く): 18919336

約数列:

[1, 2, 4, 8, 16, 269, 538, 1076, 2152, 4304, 4651, 9302, 18604, 37208, 74416, 1251119, 2502238, 5004476, 10008952, 20017904]

約数ペア:

[(1, 20017904), (2, 10008952), (4, 5004476), (8, 2502238), (16, 1251119), (269, 74416), (538, 37208), (1076, 18604), (2152, 9302), (4304, 4651)]