20986413

素因数分解:

$3^1\times 7^1\times {\mathrm{163}}^1\times {\mathrm{6131}}^1$

素因数の和:6304

約数の個数: 16

約数和(自身を含む): 32180736

約数和(自身を除く): 11194323

約数列:

[1, 3, 7, 21, 163, 489, 1141, 3423, 6131, 18393, 42917, 128751, 999353, 2998059, 6995471, 20986413]

約数ペア:

[(1, 20986413), (3, 6995471), (7, 2998059), (21, 999353), (163, 128751), (489, 42917), (1141, 18393), (3423, 6131)]