20964237

素因数分解:

$3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{26981}}^1$

素因数の和:27028

約数の個数: 16

約数和(自身を含む): 32810112

約数和(自身を除く): 11845875

約数列:

[1, 3, 7, 21, 37, 111, 259, 777, 26981, 80943, 188867, 566601, 998297, 2994891, 6988079, 20964237]

約数ペア:

[(1, 20964237), (3, 6988079), (7, 2994891), (21, 998297), (37, 566601), (111, 188867), (259, 80943), (777, 26981)]