21515516

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{241}}^1\times {\mathrm{2029}}^1$

素因数の和:2285

約数の個数: 24

約数和(自身を含む): 41265840

約数和(自身を除く): 19750324

約数列:

[1, 2, 4, 11, 22, 44, 241, 482, 964, 2029, 2651, 4058, 5302, 8116, 10604, 22319, 44638, 89276, 488989, 977978, 1955956, 5378879, 10757758, 21515516]

約数ペア:

[(1, 21515516), (2, 10757758), (4, 5378879), (11, 1955956), (22, 977978), (44, 488989), (241, 89276), (482, 44638), (964, 22319), (2029, 10604), (2651, 8116), (4058, 5302)]