78098980

素因数分解:

$2^2\times 5^1\times {\mathrm{1721}}^1\times {\mathrm{2269}}^1$

素因数の和:3999

約数の個数: 24

約数和(自身を含む): 164175480

約数和(自身を除く): 86076500

約数列:

[1, 2, 4, 5, 10, 20, 1721, 2269, 3442, 4538, 6884, 8605, 9076, 11345, 17210, 22690, 34420, 45380, 3904949, 7809898, 15619796, 19524745, 39049490, 78098980]

約数ペア:

[(1, 78098980), (2, 39049490), (4, 19524745), (5, 15619796), (10, 7809898), (20, 3904949), (1721, 45380), (2269, 34420), (3442, 22690), (4538, 17210), (6884, 11345), (8605, 9076)]