243965215

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{220783}}^1$

素因数の和:220818

約数の個数: 16

約数和(自身を含む): 333825408

約数和(自身を除く): 89860193

約数列:

[1, 5, 13, 17, 65, 85, 221, 1105, 220783, 1103915, 2870179, 3753311, 14350895, 18766555, 48793043, 243965215]

約数ペア:

[(1, 243965215), (5, 48793043), (13, 18766555), (17, 14350895), (65, 3753311), (85, 2870179), (221, 1103915), (1105, 220783)]