81993020

素因数分解:

$2^2\times 5^1\times {\mathrm{241}}^1\times {\mathrm{17011}}^1$

素因数の和:17261

約数の個数: 24

約数和(自身を含む): 172909968

約数和(自身を除く): 90916948

約数列:

[1, 2, 4, 5, 10, 20, 241, 482, 964, 1205, 2410, 4820, 17011, 34022, 68044, 85055, 170110, 340220, 4099651, 8199302, 16398604, 20498255, 40996510, 81993020]

約数ペア:

[(1, 81993020), (2, 40996510), (4, 20498255), (5, 16398604), (10, 8199302), (20, 4099651), (241, 340220), (482, 170110), (964, 85055), (1205, 68044), (2410, 34022), (4820, 17011)]