87656180

素因数分解:

$2^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{31531}}^1$

素因数の和:31679

約数の個数: 24

約数和(自身を含む): 185408160

約数和(自身を除く): 97751980

約数列:

[1, 2, 4, 5, 10, 20, 139, 278, 556, 695, 1390, 2780, 31531, 63062, 126124, 157655, 315310, 630620, 4382809, 8765618, 17531236, 21914045, 43828090, 87656180]

約数ペア:

[(1, 87656180), (2, 43828090), (4, 21914045), (5, 17531236), (10, 8765618), (20, 4382809), (139, 630620), (278, 315310), (556, 157655), (695, 126124), (1390, 63062), (2780, 31531)]