121215655

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{21821}}^1$

素因数の和:21938

約数の個数: 16

約数和(自身を含む): 160260768

約数和(自身を除く): 39045113

約数列:

[1, 5, 11, 55, 101, 505, 1111, 5555, 21821, 109105, 240031, 1200155, 2203921, 11019605, 24243131, 121215655]

約数ペア:

[(1, 121215655), (5, 24243131), (11, 11019605), (55, 2203921), (101, 1200155), (505, 240031), (1111, 109105), (5555, 21821)]