17991281

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{1151}}^1$

素因数の和:1205

約数の個数: 24

約数和(自身を含む): 23639040

約数和(自身を除く): 5647759

約数列:

[1, 7, 11, 29, 49, 77, 203, 319, 539, 1151, 1421, 2233, 8057, 12661, 15631, 33379, 56399, 88627, 233653, 367169, 620389, 1635571, 2570183, 17991281]

約数ペア:

[(1, 17991281), (7, 2570183), (11, 1635571), (29, 620389), (49, 367169), (77, 233653), (203, 88627), (319, 56399), (539, 33379), (1151, 15631), (1421, 12661), (2233, 8057)]