21663621

素因数分解:

$3^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{8387}}^1$

素因数の和:8441

約数の個数: 24

約数和(自身を含む): 36638784

約数和(自身を除く): 14975163

約数列:

[1, 3, 7, 9, 21, 41, 63, 123, 287, 369, 861, 2583, 8387, 25161, 58709, 75483, 176127, 343867, 528381, 1031601, 2407069, 3094803, 7221207, 21663621]

約数ペア:

[(1, 21663621), (3, 7221207), (7, 3094803), (9, 2407069), (21, 1031601), (41, 528381), (63, 343867), (123, 176127), (287, 75483), (369, 58709), (861, 25161), (2583, 8387)]