20217504909

素因数分解:

$3^1\times 7^3\times {\mathrm{19647721}}^1$

素因数の和:19647745

約数の個数: 16

約数和(自身を含む): 31436355200

約数和(自身を除く): 11218850291

約数列:

[1, 3, 7, 21, 49, 147, 343, 1029, 19647721, 58943163, 137534047, 412602141, 962738329, 2888214987, 6739168303, 20217504909]

約数ペア:

[(1, 20217504909), (3, 6739168303), (7, 2888214987), (21, 962738329), (49, 412602141), (147, 137534047), (343, 58943163), (1029, 19647721)]