21543687

素因数分解:

$3^2\times {\mathrm{11}}^2\times {\mathrm{73}}^1\times {\mathrm{271}}^1$

素因数の和:372

約数の個数: 36

約数和(自身を含む): 34801312

約数和(自身を除く): 13257625

約数列:

[1, 3, 9, 11, 33, 73, 99, 121, 219, 271, 363, 657, 803, 813, 1089, 2409, 2439, 2981, 7227, 8833, 8943, 19783, 26499, 26829, 32791, 59349, 79497, 98373, 178047, 217613, 295119, 652839, 1958517, 2393743, 7181229, 21543687]

約数ペア:

[(1, 21543687), (3, 7181229), (9, 2393743), (11, 1958517), (33, 652839), (73, 295119), (99, 217613), (121, 178047), (219, 98373), (271, 79497), (363, 59349), (657, 32791), (803, 26829), (813, 26499), (1089, 19783), (2409, 8943), (2439, 8833), (2981, 7227)]