21989392

素因数分解:

$2^4\times {\mathrm{389}}^1\times {\mathrm{3533}}^1$

素因数の和:3930

約数の個数: 20

約数和(自身を含む): 42726060

約数和(自身を除く): 20736668

約数列:

[1, 2, 4, 8, 16, 389, 778, 1556, 3112, 3533, 6224, 7066, 14132, 28264, 56528, 1374337, 2748674, 5497348, 10994696, 21989392]

約数ペア:

[(1, 21989392), (2, 10994696), (4, 5497348), (8, 2748674), (16, 1374337), (389, 56528), (778, 28264), (1556, 14132), (3112, 7066), (3533, 6224)]