21531345

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{11863}}^1$

素因数の和:11893

約数の個数: 24

約数和(自身を含む): 37869888

約数和(自身を除く): 16338543

約数列:

[1, 3, 5, 11, 15, 33, 55, 121, 165, 363, 605, 1815, 11863, 35589, 59315, 130493, 177945, 391479, 652465, 1435423, 1957395, 4306269, 7177115, 21531345]

約数ペア:

[(1, 21531345), (3, 7177115), (5, 4306269), (11, 1957395), (15, 1435423), (33, 652465), (55, 391479), (121, 177945), (165, 130493), (363, 59315), (605, 35589), (1815, 11863)]