21478834

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{20149}}^1$

素因数の和:20205

約数の個数: 16

約数和(自身を含む): 35544600

約数和(自身を除く): 14065766

約数列:

[1, 2, 13, 26, 41, 82, 533, 1066, 20149, 40298, 261937, 523874, 826109, 1652218, 10739417, 21478834]

約数ペア:

[(1, 21478834), (2, 10739417), (13, 1652218), (26, 826109), (41, 523874), (82, 261937), (533, 40298), (1066, 20149)]