21390403

素因数分解:

${\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{1097}}^1$

素因数の和:1182

約数の個数: 16

約数和(自身を含む): 24033024

約数和(自身を除く): 2642621

約数列:

[1, 17, 31, 37, 527, 629, 1097, 1147, 18649, 19499, 34007, 40589, 578119, 690013, 1258259, 21390403]

約数ペア:

[(1, 21390403), (17, 1258259), (31, 690013), (37, 578119), (527, 40589), (629, 34007), (1097, 19499), (1147, 18649)]