21294065

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{3947}}^1$

素因数の和:4048

約数の個数: 16

約数和(自身を含む): 27857088

約数和(自身を除く): 6563023

約数列:

[1, 5, 13, 65, 83, 415, 1079, 3947, 5395, 19735, 51311, 256555, 327601, 1638005, 4258813, 21294065]

約数ペア:

[(1, 21294065), (5, 4258813), (13, 1638005), (65, 327601), (83, 256555), (415, 51311), (1079, 19735), (3947, 5395)]