21001998

素因数分解:

$2^1\times 3^1\times {\mathrm{709}}^1\times {\mathrm{4937}}^1$

素因数の和:5651

約数の個数: 16

約数和(自身を含む): 42071760

約数和(自身を除く): 21069762

約数列:

[1, 2, 3, 6, 709, 1418, 2127, 4254, 4937, 9874, 14811, 29622, 3500333, 7000666, 10500999, 21001998]

約数ペア:

[(1, 21001998), (2, 10500999), (3, 7000666), (6, 3500333), (709, 29622), (1418, 14811), (2127, 9874), (4254, 4937)]