21679137

素因数分解:

$3^3\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{439}}^1$

素因数の和:538

約数の個数: 32

約数和(自身を含む): 33792000

約数和(自身を除く): 12112863

約数列:

[1, 3, 9, 27, 31, 59, 93, 177, 279, 439, 531, 837, 1317, 1593, 1829, 3951, 5487, 11853, 13609, 16461, 25901, 40827, 49383, 77703, 122481, 233109, 367443, 699327, 802931, 2408793, 7226379, 21679137]

約数ペア:

[(1, 21679137), (3, 7226379), (9, 2408793), (27, 802931), (31, 699327), (59, 367443), (93, 233109), (177, 122481), (279, 77703), (439, 49383), (531, 40827), (837, 25901), (1317, 16461), (1593, 13609), (1829, 11853), (3951, 5487)]