19997559

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{4507}}^1$

素因数の和:4559

約数の個数: 24

約数和(自身を含む): 31646160

約数和(自身を除く): 11648601

約数列:

[1, 3, 9, 17, 29, 51, 87, 153, 261, 493, 1479, 4437, 4507, 13521, 40563, 76619, 130703, 229857, 392109, 689571, 1176327, 2221951, 6665853, 19997559]

約数ペア:

[(1, 19997559), (3, 6665853), (9, 2221951), (17, 1176327), (29, 689571), (51, 392109), (87, 229857), (153, 130703), (261, 76619), (493, 40563), (1479, 13521), (4437, 4507)]