68657840

素因数分解:

$2^4\times 5^1\times {\mathrm{858223}}^1$

素因数の和:858236

約数の個数: 20

約数和(自身を含む): 159629664

約数和(自身を除く): 90971824

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 858223, 1716446, 3432892, 4291115, 6865784, 8582230, 13731568, 17164460, 34328920, 68657840]

約数ペア:

[(1, 68657840), (2, 34328920), (4, 17164460), (5, 13731568), (8, 8582230), (10, 6865784), (16, 4291115), (20, 3432892), (40, 1716446), (80, 858223)]