661904

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{1009}}^1$

素因数の和:1058

約数の個数: 20

約数和(自身を含む): 1315020

約数和(自身を除く): 653116

約数列:

[1, 2, 4, 8, 16, 41, 82, 164, 328, 656, 1009, 2018, 4036, 8072, 16144, 41369, 82738, 165476, 330952, 661904]

約数ペア:

[(1, 661904), (2, 330952), (4, 165476), (8, 82738), (16, 41369), (41, 16144), (82, 8072), (164, 4036), (328, 2018), (656, 1009)]