64940240

素因数分解:

$2^4\times 5^1\times {\mathrm{811753}}^1$

素因数の和:811766

約数の個数: 20

約数和(自身を含む): 150986244

約数和(自身を除く): 86046004

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 811753, 1623506, 3247012, 4058765, 6494024, 8117530, 12988048, 16235060, 32470120, 64940240]

約数ペア:

[(1, 64940240), (2, 32470120), (4, 16235060), (5, 12988048), (8, 8117530), (10, 6494024), (16, 4058765), (20, 3247012), (40, 1623506), (80, 811753)]