1640493

素因数分解:

$3^5\times {\mathrm{43}}^1\times {\mathrm{157}}^1$

素因数の和:215

約数の個数: 24

約数和(自身を含む): 2530528

約数和(自身を除く): 890035

約数列:

[1, 3, 9, 27, 43, 81, 129, 157, 243, 387, 471, 1161, 1413, 3483, 4239, 6751, 10449, 12717, 20253, 38151, 60759, 182277, 546831, 1640493]

約数ペア:

[(1, 1640493), (3, 546831), (9, 182277), (27, 60759), (43, 38151), (81, 20253), (129, 12717), (157, 10449), (243, 6751), (387, 4239), (471, 3483), (1161, 1413)]