64940080

素因数分解:

$2^4\times 5^1\times {\mathrm{719}}^1\times {\mathrm{1129}}^1$

素因数の和:1861

約数の個数: 40

約数和(自身を含む): 151329600

約数和(自身を除く): 86389520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 719, 1129, 1438, 2258, 2876, 3595, 4516, 5645, 5752, 7190, 9032, 11290, 11504, 14380, 18064, 22580, 28760, 45160, 57520, 90320, 811751, 1623502, 3247004, 4058755, 6494008, 8117510, 12988016, 16235020, 32470040, 64940080]

約数ペア:

[(1, 64940080), (2, 32470040), (4, 16235020), (5, 12988016), (8, 8117510), (10, 6494008), (16, 4058755), (20, 3247004), (40, 1623502), (80, 811751), (719, 90320), (1129, 57520), (1438, 45160), (2258, 28760), (2876, 22580), (3595, 18064), (4516, 14380), (5645, 11504), (5752, 11290), (7190, 9032)]