1243255

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{617}}^1$

素因数の和:666

約数の個数: 16

約数和(自身を含む): 1661184

約数和(自身を除く): 417929

約数列:

[1, 5, 13, 31, 65, 155, 403, 617, 2015, 3085, 8021, 19127, 40105, 95635, 248651, 1243255]

約数ペア:

[(1, 1243255), (5, 248651), (13, 95635), (31, 40105), (65, 19127), (155, 8021), (403, 3085), (617, 2015)]