3980421

素因数分解:

$3^4\times {\mathrm{157}}^1\times {\mathrm{313}}^1$

素因数の和:482

約数の個数: 20

約数和(自身を含む): 6003052

約数和(自身を除く): 2022631

約数列:

[1, 3, 9, 27, 81, 157, 313, 471, 939, 1413, 2817, 4239, 8451, 12717, 25353, 49141, 147423, 442269, 1326807, 3980421]

約数ペア:

[(1, 3980421), (3, 1326807), (9, 442269), (27, 147423), (81, 49141), (157, 25353), (313, 12717), (471, 8451), (939, 4239), (1413, 2817)]