81581367

素因数分解:

$3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{113}}^1\times {\mathrm{1109}}^1$

素因数の和:1263

約数の個数: 32

約数和(自身を含む): 129576960

約数和(自身を除く): 47995593

約数列:

[1, 3, 7, 21, 31, 93, 113, 217, 339, 651, 791, 1109, 2373, 3327, 3503, 7763, 10509, 23289, 24521, 34379, 73563, 103137, 125317, 240653, 375951, 721959, 877219, 2631657, 3884827, 11654481, 27193789, 81581367]

約数ペア:

[(1, 81581367), (3, 27193789), (7, 11654481), (21, 3884827), (31, 2631657), (93, 877219), (113, 721959), (217, 375951), (339, 240653), (651, 125317), (791, 103137), (1109, 73563), (2373, 34379), (3327, 24521), (3503, 23289), (7763, 10509)]