639414

素因数分解:

$2^1\times 3^4\times {\mathrm{3947}}^1$

素因数の和:3961

約数の個数: 20

約数和(自身を含む): 1433124

約数和(自身を除く): 793710

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 81, 162, 3947, 7894, 11841, 23682, 35523, 71046, 106569, 213138, 319707, 639414]

約数ペア:

[(1, 639414), (2, 319707), (3, 213138), (6, 106569), (9, 71046), (18, 35523), (27, 23682), (54, 11841), (81, 7894), (162, 3947)]