15938380

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^2\times {\mathrm{431}}^1$

素因数の和:526

約数の個数: 36

約数和(自身を含む): 34346592

約数和(自身を除く): 18408212

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 431, 860, 862, 1724, 1849, 2155, 3698, 4310, 7396, 8620, 9245, 18490, 18533, 36980, 37066, 74132, 92665, 185330, 370660, 796919, 1593838, 3187676, 3984595, 7969190, 15938380]

約数ペア:

[(1, 15938380), (2, 7969190), (4, 3984595), (5, 3187676), (10, 1593838), (20, 796919), (43, 370660), (86, 185330), (172, 92665), (215, 74132), (430, 37066), (431, 36980), (860, 18533), (862, 18490), (1724, 9245), (1849, 8620), (2155, 7396), (3698, 4310)]