2129860

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{977}}^1$

素因数の和:1095

約数の個数: 24

約数和(自身を含む): 4518360

約数和(自身を除く): 2388500

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 977, 1090, 1954, 2180, 3908, 4885, 9770, 19540, 106493, 212986, 425972, 532465, 1064930, 2129860]

約数ペア:

[(1, 2129860), (2, 1064930), (4, 532465), (5, 425972), (10, 212986), (20, 106493), (109, 19540), (218, 9770), (436, 4885), (545, 3908), (977, 2180), (1090, 1954)]