191780

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{223}}^1$

素因数の和:275

約数の個数: 24

約数和(自身を含む): 413952

約数和(自身を除く): 222172

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 223, 430, 446, 860, 892, 1115, 2230, 4460, 9589, 19178, 38356, 47945, 95890, 191780]

約数ペア:

[(1, 191780), (2, 95890), (4, 47945), (5, 38356), (10, 19178), (20, 9589), (43, 4460), (86, 2230), (172, 1115), (215, 892), (223, 860), (430, 446)]