21056295

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{107981}}^1$

素因数の和:108002

約数の個数: 16

約数和(自身を含む): 36281952

約数和(自身を除く): 15225657

約数列:

[1, 3, 5, 13, 15, 39, 65, 195, 107981, 323943, 539905, 1403753, 1619715, 4211259, 7018765, 21056295]

約数ペア:

[(1, 21056295), (3, 7018765), (5, 4211259), (13, 1619715), (15, 1403753), (39, 539905), (65, 323943), (195, 107981)]