21768663

素因数分解:

$3^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{131}}^1\times {\mathrm{193}}^1$

素因数の和:375

約数の個数: 32

約数和(自身を含む): 34417152

約数和(自身を除く): 12648489

約数列:

[1, 3, 7, 21, 41, 123, 131, 193, 287, 393, 579, 861, 917, 1351, 2751, 4053, 5371, 7913, 16113, 23739, 25283, 37597, 55391, 75849, 112791, 166173, 176981, 530943, 1036603, 3109809, 7256221, 21768663]

約数ペア:

[(1, 21768663), (3, 7256221), (7, 3109809), (21, 1036603), (41, 530943), (123, 176981), (131, 166173), (193, 112791), (287, 75849), (393, 55391), (579, 37597), (861, 25283), (917, 23739), (1351, 16113), (2751, 7913), (4053, 5371)]