31188760

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{18133}}^1$

素因数の和:18187

約数の個数: 32

約数和(自身を含む): 71810640

約数和(自身を除く): 40621880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 18133, 36266, 72532, 90665, 145064, 181330, 362660, 725320, 779719, 1559438, 3118876, 3898595, 6237752, 7797190, 15594380, 31188760]

約数ペア:

[(1, 31188760), (2, 15594380), (4, 7797190), (5, 6237752), (8, 3898595), (10, 3118876), (20, 1559438), (40, 779719), (43, 725320), (86, 362660), (172, 181330), (215, 145064), (344, 90665), (430, 72532), (860, 36266), (1720, 18133)]