208332865

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{103391}}^1$

素因数の和:103440

約数の個数: 16

約数和(自身を含む): 277917696

約数和(自身を除く): 69584831

約数列:

[1, 5, 13, 31, 65, 155, 403, 2015, 103391, 516955, 1344083, 3205121, 6720415, 16025605, 41666573, 208332865]

約数ペア:

[(1, 208332865), (5, 41666573), (13, 16025605), (31, 6720415), (65, 3205121), (155, 1344083), (403, 516955), (2015, 103391)]