20308689

素因数分解:

$3^2\times {\mathrm{31}}^1\times {\mathrm{83}}^1\times {\mathrm{877}}^1$

素因数の和:997

約数の個数: 24

約数和(自身を含む): 30680832

約数和(自身を除く): 10372143

約数列:

[1, 3, 9, 31, 83, 93, 249, 279, 747, 877, 2573, 2631, 7719, 7893, 23157, 27187, 72791, 81561, 218373, 244683, 655119, 2256521, 6769563, 20308689]

約数ペア:

[(1, 20308689), (3, 6769563), (9, 2256521), (31, 655119), (83, 244683), (93, 218373), (249, 81561), (279, 72791), (747, 27187), (877, 23157), (2573, 7893), (2631, 7719)]