997940

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{1217}}^1$

素因数の和:1267

約数の個数: 24

約数和(自身を含む): 2148552

約数和(自身を除く): 1150612

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 1217, 2434, 4868, 6085, 12170, 24340, 49897, 99794, 199588, 249485, 498970, 997940]

約数ペア:

[(1, 997940), (2, 498970), (4, 249485), (5, 199588), (10, 99794), (20, 49897), (41, 24340), (82, 12170), (164, 6085), (205, 4868), (410, 2434), (820, 1217)]