81343100

素因数分解:

$2^2\times 5^2\times {\mathrm{43}}^1\times {\mathrm{18917}}^1$

素因数の和:18974

約数の個数: 36

約数和(自身を含む): 180629064

約数和(自身を除く): 99285964

約数列:

[1, 2, 4, 5, 10, 20, 25, 43, 50, 86, 100, 172, 215, 430, 860, 1075, 2150, 4300, 18917, 37834, 75668, 94585, 189170, 378340, 472925, 813431, 945850, 1626862, 1891700, 3253724, 4067155, 8134310, 16268620, 20335775, 40671550, 81343100]

約数ペア:

[(1, 81343100), (2, 40671550), (4, 20335775), (5, 16268620), (10, 8134310), (20, 4067155), (25, 3253724), (43, 1891700), (50, 1626862), (86, 945850), (100, 813431), (172, 472925), (215, 378340), (430, 189170), (860, 94585), (1075, 75668), (2150, 37834), (4300, 18917)]