81645104

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{124459}}^1$

素因数の和:124508

約数の個数: 20

約数和(自身を含む): 162046920

約数和(自身を除く): 80401816

約数列:

[1, 2, 4, 8, 16, 41, 82, 164, 328, 656, 124459, 248918, 497836, 995672, 1991344, 5102819, 10205638, 20411276, 40822552, 81645104]

約数ペア:

[(1, 81645104), (2, 40822552), (4, 20411276), (8, 10205638), (16, 5102819), (41, 1991344), (82, 995672), (164, 497836), (328, 248918), (656, 124459)]