18237891

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{1063}}^1$

素因数の和:1135

約数の個数: 32

約数和(自身を含む): 29962240

約数和(自身を除く): 11724349

約数列:

[1, 3, 7, 19, 21, 43, 57, 129, 133, 301, 399, 817, 903, 1063, 2451, 3189, 5719, 7441, 17157, 20197, 22323, 45709, 60591, 137127, 141379, 319963, 424137, 868471, 959889, 2605413, 6079297, 18237891]

約数ペア:

[(1, 18237891), (3, 6079297), (7, 2605413), (19, 959889), (21, 868471), (43, 424137), (57, 319963), (129, 141379), (133, 137127), (301, 60591), (399, 45709), (817, 22323), (903, 20197), (1063, 17157), (2451, 7441), (3189, 5719)]