209580305

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{122921}}^1$

素因数の和:122968

約数の個数: 16

約数和(自身を含む): 283212288

約数和(自身を除く): 73631983

約数列:

[1, 5, 11, 31, 55, 155, 341, 1705, 122921, 614605, 1352131, 3810551, 6760655, 19052755, 41916061, 209580305]

約数ペア:

[(1, 209580305), (5, 41916061), (11, 19052755), (31, 6760655), (55, 3810551), (155, 1352131), (341, 614605), (1705, 122921)]