18771471

素因数分解:

$3^2\times {\mathrm{47}}^1\times {\mathrm{199}}^1\times {\mathrm{223}}^1$

素因数の和:475

約数の個数: 24

約数和(自身を含む): 27955200

約数和(自身を除く): 9183729

約数列:

[1, 3, 9, 47, 141, 199, 223, 423, 597, 669, 1791, 2007, 9353, 10481, 28059, 31443, 44377, 84177, 94329, 133131, 399393, 2085719, 6257157, 18771471]

約数ペア:

[(1, 18771471), (3, 6257157), (9, 2085719), (47, 399393), (141, 133131), (199, 94329), (223, 84177), (423, 44377), (597, 31443), (669, 28059), (1791, 10481), (2007, 9353)]