64940560

素因数分解:

$2^4\times 5^1\times {\mathrm{811757}}^1$

素因数の和:811770

約数の個数: 20

約数和(自身を含む): 150986988

約数和(自身を除く): 86046428

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 811757, 1623514, 3247028, 4058785, 6494056, 8117570, 12988112, 16235140, 32470280, 64940560]

約数ペア:

[(1, 64940560), (2, 32470280), (4, 16235140), (5, 12988112), (8, 8117570), (10, 6494056), (16, 4058785), (20, 3247028), (40, 1623514), (80, 811757)]