205287579

素因数分解:

$3^2\times 7^1\times {\mathrm{163}}^1\times {\mathrm{19991}}^1$

素因数の和:20167

約数の個数: 24

約数和(自身を含む): 340983552

約数和(自身を除く): 135695973

約数列:

[1, 3, 7, 9, 21, 63, 163, 489, 1141, 1467, 3423, 10269, 19991, 59973, 139937, 179919, 419811, 1259433, 3258533, 9775599, 22809731, 29326797, 68429193, 205287579]

約数ペア:

[(1, 205287579), (3, 68429193), (7, 29326797), (9, 22809731), (21, 9775599), (63, 3258533), (163, 1259433), (489, 419811), (1141, 179919), (1467, 139937), (3423, 59973), (10269, 19991)]