21081717

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{227}}^1\times {\mathrm{607}}^1$

素因数の和:857

約数の個数: 24

約数和(自身を含む): 32438016

約数和(自身を除く): 11356299

約数列:

[1, 3, 9, 17, 51, 153, 227, 607, 681, 1821, 2043, 3859, 5463, 10319, 11577, 30957, 34731, 92871, 137789, 413367, 1240101, 2342413, 7027239, 21081717]

約数ペア:

[(1, 21081717), (3, 7027239), (9, 2342413), (17, 1240101), (51, 413367), (153, 137789), (227, 92871), (607, 34731), (681, 30957), (1821, 11577), (2043, 10319), (3859, 5463)]