21220735

素因数分解:

$5^1\times {\mathrm{47}}^1\times {\mathrm{73}}^1\times {\mathrm{1237}}^1$

素因数の和:1362

約数の個数: 16

約数和(自身を含む): 26384256

約数和(自身を除く): 5163521

約数列:

[1, 5, 47, 73, 235, 365, 1237, 3431, 6185, 17155, 58139, 90301, 290695, 451505, 4244147, 21220735]

約数ペア:

[(1, 21220735), (5, 4244147), (47, 451505), (73, 290695), (235, 90301), (365, 58139), (1237, 17155), (3431, 6185)]