39972681

素因数分解:

$3^2\times 7^2\times {\mathrm{90641}}^1$

素因数の和:90661

約数の個数: 18

約数和(自身を含む): 67165722

約数和(自身を除く): 27193041

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 90641, 271923, 634487, 815769, 1903461, 4441409, 5710383, 13324227, 39972681]

約数ペア:

[(1, 39972681), (3, 13324227), (7, 5710383), (9, 4441409), (21, 1903461), (49, 815769), (63, 634487), (147, 271923), (441, 90641)]