66919280

素因数分解:

$2^4\times 5^1\times {\mathrm{836491}}^1$

素因数の和:836504

約数の個数: 20

約数和(自身を含む): 155587512

約数和(自身を除く): 88668232

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 836491, 1672982, 3345964, 4182455, 6691928, 8364910, 13383856, 16729820, 33459640, 66919280]

約数ペア:

[(1, 66919280), (2, 33459640), (4, 16729820), (5, 13383856), (8, 8364910), (10, 6691928), (16, 4182455), (20, 3345964), (40, 1672982), (80, 836491)]