21101817

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{163}}^1\times {\mathrm{3923}}^1$

素因数の和:4100

約数の個数: 16

約数和(自身を含む): 30889728

約数和(自身を除く): 9787911

約数列:

[1, 3, 11, 33, 163, 489, 1793, 3923, 5379, 11769, 43153, 129459, 639449, 1918347, 7033939, 21101817]

約数ペア:

[(1, 21101817), (3, 7033939), (11, 1918347), (33, 639449), (163, 129459), (489, 43153), (1793, 11769), (3923, 5379)]