20213907

素因数分解:

$3^1\times 7^1\times {\mathrm{157}}^1\times {\mathrm{6131}}^1$

素因数の和:6298

約数の個数: 16

約数和(自身を含む): 31003392

約数和(自身を除く): 10789485

約数列:

[1, 3, 7, 21, 157, 471, 1099, 3297, 6131, 18393, 42917, 128751, 962567, 2887701, 6737969, 20213907]

約数ペア:

[(1, 20213907), (3, 6737969), (7, 2887701), (21, 962567), (157, 128751), (471, 42917), (1099, 18393), (3297, 6131)]