64677880

素因数分解:

$2^3\times 5^1\times {\mathrm{1616947}}^1$

素因数の和:1616958

約数の個数: 16

約数和(自身を含む): 145525320

約数和(自身を除く): 80847440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1616947, 3233894, 6467788, 8084735, 12935576, 16169470, 32338940, 64677880]

約数ペア:

[(1, 64677880), (2, 32338940), (4, 16169470), (5, 12935576), (8, 8084735), (10, 6467788), (20, 3233894), (40, 1616947)]