21220042

素因数分解:

$2^1\times {\mathrm{41}}^1\times {\mathrm{251}}^1\times {\mathrm{1031}}^1$

素因数の和:1325

約数の個数: 16

約数和(自身を含む): 32768064

約数和(自身を除く): 11548022

約数列:

[1, 2, 41, 82, 251, 502, 1031, 2062, 10291, 20582, 42271, 84542, 258781, 517562, 10610021, 21220042]

約数ペア:

[(1, 21220042), (2, 10610021), (41, 517562), (82, 258781), (251, 84542), (502, 42271), (1031, 20582), (2062, 10291)]