64629680

素因数分解:

$2^4\times 5^1\times {\mathrm{807871}}^1$

素因数の和:807884

約数の個数: 20

約数和(自身を含む): 150264192

約数和(自身を除く): 85634512

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 807871, 1615742, 3231484, 4039355, 6462968, 8078710, 12925936, 16157420, 32314840, 64629680]

約数ペア:

[(1, 64629680), (2, 32314840), (4, 16157420), (5, 12925936), (8, 8078710), (10, 6462968), (16, 4039355), (20, 3231484), (40, 1615742), (80, 807871)]