21113168

素因数分解:

$2^4\times {\mathrm{311}}^1\times {\mathrm{4243}}^1$

素因数の和:4562

約数の個数: 20

約数和(自身を含む): 41047968

約数和(自身を除く): 19934800

約数列:

[1, 2, 4, 8, 16, 311, 622, 1244, 2488, 4243, 4976, 8486, 16972, 33944, 67888, 1319573, 2639146, 5278292, 10556584, 21113168]

約数ペア:

[(1, 21113168), (2, 10556584), (4, 5278292), (8, 2639146), (16, 1319573), (311, 67888), (622, 33944), (1244, 16972), (2488, 8486), (4243, 4976)]