64889840

素因数分解:

$2^4\times 5^1\times {\mathrm{811123}}^1$

素因数の和:811136

約数の個数: 20

約数和(自身を含む): 150869064

約数和(自身を除く): 85979224

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 811123, 1622246, 3244492, 4055615, 6488984, 8111230, 12977968, 16222460, 32444920, 64889840]

約数ペア:

[(1, 64889840), (2, 32444920), (4, 16222460), (5, 12977968), (8, 8111230), (10, 6488984), (16, 4055615), (20, 3244492), (40, 1622246), (80, 811123)]