21378236

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{563}}^1\times {\mathrm{863}}^1$

素因数の和:1441

約数の個数: 24

約数和(自身を含む): 40932864

約数和(自身を除く): 19554628

約数列:

[1, 2, 4, 11, 22, 44, 563, 863, 1126, 1726, 2252, 3452, 6193, 9493, 12386, 18986, 24772, 37972, 485869, 971738, 1943476, 5344559, 10689118, 21378236]

約数ペア:

[(1, 21378236), (2, 10689118), (4, 5344559), (11, 1943476), (22, 971738), (44, 485869), (563, 37972), (863, 24772), (1126, 18986), (1726, 12386), (2252, 9493), (3452, 6193)]