81515805

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{383}}^1\times {\mathrm{2027}}^1$

素因数の和:2425

約数の個数: 32

約数和(自身を含む): 149520384

約数和(自身を除く): 68004579

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 383, 1149, 1915, 2027, 2681, 5745, 6081, 8043, 10135, 13405, 14189, 30405, 40215, 42567, 70945, 212835, 776341, 2329023, 3881705, 5434387, 11645115, 16303161, 27171935, 81515805]

約数ペア:

[(1, 81515805), (3, 27171935), (5, 16303161), (7, 11645115), (15, 5434387), (21, 3881705), (35, 2329023), (105, 776341), (383, 212835), (1149, 70945), (1915, 42567), (2027, 40215), (2681, 30405), (5745, 14189), (6081, 13405), (8043, 10135)]