68457680

素因数分解:

$2^4\times 5^1\times {\mathrm{855721}}^1$

素因数の和:855734

約数の個数: 20

約数和(自身を含む): 159164292

約数和(自身を除く): 90706612

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 855721, 1711442, 3422884, 4278605, 6845768, 8557210, 13691536, 17114420, 34228840, 68457680]

約数ペア:

[(1, 68457680), (2, 34228840), (4, 17114420), (5, 13691536), (8, 8557210), (10, 6845768), (16, 4278605), (20, 3422884), (40, 1711442), (80, 855721)]