21071655

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{42569}}^1$

素因数の和:42591

約数の個数: 24

約数和(自身を含む): 39845520

約数和(自身を除く): 18773865

約数列:

[1, 3, 5, 9, 11, 15, 33, 45, 55, 99, 165, 495, 42569, 127707, 212845, 383121, 468259, 638535, 1404777, 1915605, 2341295, 4214331, 7023885, 21071655]

約数ペア:

[(1, 21071655), (3, 7023885), (5, 4214331), (9, 2341295), (11, 1915605), (15, 1404777), (33, 638535), (45, 468259), (55, 383121), (99, 212845), (165, 127707), (495, 42569)]