20664976

素因数分解:

$2^4\times {\mathrm{71}}^1\times {\mathrm{18191}}^1$

素因数の和:18270

約数の個数: 20

約数和(自身を含む): 40604544

約数和(自身を除く): 19939568

約数列:

[1, 2, 4, 8, 16, 71, 142, 284, 568, 1136, 18191, 36382, 72764, 145528, 291056, 1291561, 2583122, 5166244, 10332488, 20664976]

約数ペア:

[(1, 20664976), (2, 10332488), (4, 5166244), (8, 2583122), (16, 1291561), (71, 291056), (142, 145528), (284, 72764), (568, 36382), (1136, 18191)]