21147190

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{111301}}^1$

素因数の和:111327

約数の個数: 16

約数和(自身を含む): 40068720

約数和(自身を除く): 18921530

約数列:

[1, 2, 5, 10, 19, 38, 95, 190, 111301, 222602, 556505, 1113010, 2114719, 4229438, 10573595, 21147190]

約数ペア:

[(1, 21147190), (2, 10573595), (5, 4229438), (10, 2114719), (19, 1113010), (38, 556505), (95, 222602), (190, 111301)]