21755668

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{107}}^1\times {\mathrm{4621}}^1$

素因数の和:4743

約数の個数: 24

約数和(自身を含む): 41930784

約数和(自身を除く): 20175116

約数列:

[1, 2, 4, 11, 22, 44, 107, 214, 428, 1177, 2354, 4621, 4708, 9242, 18484, 50831, 101662, 203324, 494447, 988894, 1977788, 5438917, 10877834, 21755668]

約数ペア:

[(1, 21755668), (2, 10877834), (4, 5438917), (11, 1977788), (22, 988894), (44, 494447), (107, 203324), (214, 101662), (428, 50831), (1177, 18484), (2354, 9242), (4621, 4708)]