16864880

素因数分解:

$2^4\times 5^1\times {\mathrm{210811}}^1$

素因数の和:210824

約数の個数: 20

約数和(自身を含む): 39211032

約数和(自身を除く): 22346152

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 210811, 421622, 843244, 1054055, 1686488, 2108110, 3372976, 4216220, 8432440, 16864880]

約数ペア:

[(1, 16864880), (2, 8432440), (4, 4216220), (5, 3372976), (8, 2108110), (10, 1686488), (16, 1054055), (20, 843244), (40, 421622), (80, 210811)]