81136700

素因数分解:

$2^2\times 5^2\times {\mathrm{43}}^1\times {\mathrm{18869}}^1$

素因数の和:18926

約数の個数: 36

約数和(自身を含む): 180170760

約数和(自身を除く): 99034060

約数列:

[1, 2, 4, 5, 10, 20, 25, 43, 50, 86, 100, 172, 215, 430, 860, 1075, 2150, 4300, 18869, 37738, 75476, 94345, 188690, 377380, 471725, 811367, 943450, 1622734, 1886900, 3245468, 4056835, 8113670, 16227340, 20284175, 40568350, 81136700]

約数ペア:

[(1, 81136700), (2, 40568350), (4, 20284175), (5, 16227340), (10, 8113670), (20, 4056835), (25, 3245468), (43, 1886900), (50, 1622734), (86, 943450), (100, 811367), (172, 471725), (215, 377380), (430, 188690), (860, 94345), (1075, 75476), (2150, 37738), (4300, 18869)]