64212880

素因数分解:

$2^4\times 5^1\times {\mathrm{802661}}^1$

素因数の和:802674

約数の個数: 20

約数和(自身を含む): 149295132

約数和(自身を除く): 85082252

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 802661, 1605322, 3210644, 4013305, 6421288, 8026610, 12842576, 16053220, 32106440, 64212880]

約数ペア:

[(1, 64212880), (2, 32106440), (4, 16053220), (5, 12842576), (8, 8026610), (10, 6421288), (16, 4013305), (20, 3210644), (40, 1605322), (80, 802661)]