21521097

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{419}}^1\times {\mathrm{439}}^1$

素因数の和:877

約数の個数: 24

約数和(自身を含む): 33633600

約数和(自身を除く): 12112503

約数列:

[1, 3, 9, 13, 39, 117, 419, 439, 1257, 1317, 3771, 3951, 5447, 5707, 16341, 17121, 49023, 51363, 183941, 551823, 1655469, 2391233, 7173699, 21521097]

約数ペア:

[(1, 21521097), (3, 7173699), (9, 2391233), (13, 1655469), (39, 551823), (117, 183941), (419, 51363), (439, 49023), (1257, 17121), (1317, 16341), (3771, 5707), (3951, 5447)]