638971571

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{269}}^1\times {\mathrm{19961}}^1$

素因数の和:20254

約数の個数: 16

約数和(自身を含む): 776122560

約数和(自身を除く): 137150989

約数列:

[1, 7, 17, 119, 269, 1883, 4573, 19961, 32011, 139727, 339337, 2375359, 5369509, 37586563, 91281653, 638971571]

約数ペア:

[(1, 638971571), (7, 91281653), (17, 37586563), (119, 5369509), (269, 2375359), (1883, 339337), (4573, 139727), (19961, 32011)]