21515091

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{337}}^1\times {\mathrm{1637}}^1$

素因数の和:1990

約数の個数: 16

約数和(自身を含む): 31004064

約数和(自身を除く): 9488973

約数列:

[1, 3, 13, 39, 337, 1011, 1637, 4381, 4911, 13143, 21281, 63843, 551669, 1655007, 7171697, 21515091]

約数ペア:

[(1, 21515091), (3, 7171697), (13, 1655007), (39, 551669), (337, 63843), (1011, 21281), (1637, 13143), (4381, 4911)]