21664443

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{193}}^1$

素因数の和:315

約数の個数: 32

約数和(自身を含む): 32182272

約数和(自身を除く): 10517829

約数列:

[1, 3, 17, 31, 51, 71, 93, 193, 213, 527, 579, 1207, 1581, 2201, 3281, 3621, 5983, 6603, 9843, 13703, 17949, 37417, 41109, 101711, 112251, 232951, 305133, 424793, 698853, 1274379, 7221481, 21664443]

約数ペア:

[(1, 21664443), (3, 7221481), (17, 1274379), (31, 698853), (51, 424793), (71, 305133), (93, 232951), (193, 112251), (213, 101711), (527, 41109), (579, 37417), (1207, 17949), (1581, 13703), (2201, 9843), (3281, 6603), (3621, 5983)]