21048747

素因数分解:

$3^1\times {\mathrm{73}}^1\times {\mathrm{223}}^1\times {\mathrm{431}}^1$

素因数の和:730

約数の個数: 16

約数和(自身を含む): 28643328

約数和(自身を除く): 7594581

約数列:

[1, 3, 73, 219, 223, 431, 669, 1293, 16279, 31463, 48837, 94389, 96113, 288339, 7016249, 21048747]

約数ペア:

[(1, 21048747), (3, 7016249), (73, 288339), (219, 96113), (223, 94389), (431, 48837), (669, 31463), (1293, 16279)]