21009495

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{107741}}^1$

素因数の和:107762

約数の個数: 16

約数和(自身を含む): 36201312

約数和(自身を除く): 15191817

約数列:

[1, 3, 5, 13, 15, 39, 65, 195, 107741, 323223, 538705, 1400633, 1616115, 4201899, 7003165, 21009495]

約数ペア:

[(1, 21009495), (3, 7003165), (5, 4201899), (13, 1616115), (15, 1400633), (39, 538705), (65, 323223), (195, 107741)]