64731440

素因数分解:

$2^4\times 5^1\times {\mathrm{809143}}^1$

素因数の和:809156

約数の個数: 20

約数和(自身を含む): 150500784

約数和(自身を除く): 85769344

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 809143, 1618286, 3236572, 4045715, 6473144, 8091430, 12946288, 16182860, 32365720, 64731440]

約数ペア:

[(1, 64731440), (2, 32365720), (4, 16182860), (5, 12946288), (8, 8091430), (10, 6473144), (16, 4045715), (20, 3236572), (40, 1618286), (80, 809143)]