123455420

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{561161}}^1$

素因数の和:561181

約数の個数: 24

約数和(自身を含む): 282825648

約数和(自身を除く): 159370228

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 561161, 1122322, 2244644, 2805805, 5611610, 6172771, 11223220, 12345542, 24691084, 30863855, 61727710, 123455420]

約数ペア:

[(1, 123455420), (2, 61727710), (4, 30863855), (5, 24691084), (10, 12345542), (11, 11223220), (20, 6172771), (22, 5611610), (44, 2805805), (55, 2244644), (110, 1122322), (220, 561161)]