21306291

素因数分解:

$3^1\times {\mathrm{73}}^1\times {\mathrm{271}}^1\times {\mathrm{359}}^1$

素因数の和:706

約数の個数: 16

約数和(自身を含む): 28984320

約数和(自身を除く): 7678029

約数列:

[1, 3, 73, 219, 271, 359, 813, 1077, 19783, 26207, 59349, 78621, 97289, 291867, 7102097, 21306291]

約数ペア:

[(1, 21306291), (3, 7102097), (73, 291867), (219, 97289), (271, 78621), (359, 59349), (813, 26207), (1077, 19783)]