278327259

素因数分解:

$3^4\times 7^1\times {\mathrm{490877}}^1$

素因数の和:490896

約数の個数: 20

約数和(自身を含む): 475169904

約数和(自身を除く): 196842645

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 490877, 1472631, 3436139, 4417893, 10308417, 13253679, 30925251, 39761037, 92775753, 278327259]

約数ペア:

[(1, 278327259), (3, 92775753), (7, 39761037), (9, 30925251), (21, 13253679), (27, 10308417), (63, 4417893), (81, 3436139), (189, 1472631), (567, 490877)]