20996495

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{317}}^1\times {\mathrm{1019}}^1$

素因数の和:1354

約数の個数: 16

約数和(自身を含む): 27246240

約数和(自身を除く): 6249745

約数列:

[1, 5, 13, 65, 317, 1019, 1585, 4121, 5095, 13247, 20605, 66235, 323023, 1615115, 4199299, 20996495]

約数ペア:

[(1, 20996495), (5, 4199299), (13, 1615115), (65, 323023), (317, 66235), (1019, 20605), (1585, 13247), (4121, 5095)]