21369789

素因数分解:

$3^2\times 7^1\times {\mathrm{163}}^1\times {\mathrm{2081}}^1$

素因数の和:2257

約数の個数: 24

約数和(自身を含む): 35510592

約数和(自身を除く): 14140803

約数列:

[1, 3, 7, 9, 21, 63, 163, 489, 1141, 1467, 2081, 3423, 6243, 10269, 14567, 18729, 43701, 131103, 339203, 1017609, 2374421, 3052827, 7123263, 21369789]

約数ペア:

[(1, 21369789), (3, 7123263), (7, 3052827), (9, 2374421), (21, 1017609), (63, 339203), (163, 131103), (489, 43701), (1141, 18729), (1467, 14567), (2081, 10269), (3423, 6243)]