21225655

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{3821}}^1$

素因数の和:3938

約数の個数: 16

約数和(自身を含む): 28068768

約数和(自身を除く): 6843113

約数列:

[1, 5, 11, 55, 101, 505, 1111, 3821, 5555, 19105, 42031, 210155, 385921, 1929605, 4245131, 21225655]

約数ペア:

[(1, 21225655), (5, 4245131), (11, 1929605), (55, 385921), (101, 210155), (505, 42031), (1111, 19105), (3821, 5555)]