81508

素因数分解:

$2^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1$

素因数の和:123

約数の個数: 24

約数和(自身を含む): 169344

約数和(自身を除く): 87836

約数列:

[1, 2, 4, 7, 14, 28, 41, 71, 82, 142, 164, 284, 287, 497, 574, 994, 1148, 1988, 2911, 5822, 11644, 20377, 40754, 81508]

約数ペア:

[(1, 81508), (2, 40754), (4, 20377), (7, 11644), (14, 5822), (28, 2911), (41, 1988), (71, 1148), (82, 994), (142, 574), (164, 497), (284, 287)]