21437075

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{137}}^1\times {\mathrm{569}}^1$

素因数の和:727

約数の個数: 24

約数和(自身を含む): 29261520

約数和(自身を除く): 7824445

約数列:

[1, 5, 11, 25, 55, 137, 275, 569, 685, 1507, 2845, 3425, 6259, 7535, 14225, 31295, 37675, 77953, 156475, 389765, 857483, 1948825, 4287415, 21437075]

約数ペア:

[(1, 21437075), (5, 4287415), (11, 1948825), (25, 857483), (55, 389765), (137, 156475), (275, 77953), (569, 37675), (685, 31295), (1507, 14225), (2845, 7535), (3425, 6259)]