20876801

素因数分解:

${\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{101}}^1$

素因数の和:197

約数の個数: 32

約数和(自身を含む): 25850880

約数和(自身を除く): 4974079

約数列:

[1, 11, 19, 23, 43, 101, 209, 253, 437, 473, 817, 989, 1111, 1919, 2323, 4343, 4807, 8987, 10879, 18791, 21109, 25553, 44137, 47773, 82517, 99889, 206701, 485507, 907687, 1098779, 1897891, 20876801]

約数ペア:

[(1, 20876801), (11, 1897891), (19, 1098779), (23, 907687), (43, 485507), (101, 206701), (209, 99889), (253, 82517), (437, 47773), (473, 44137), (817, 25553), (989, 21109), (1111, 18791), (1919, 10879), (2323, 8987), (4343, 4807)]