2781555

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{59}}^1\times {\mathrm{449}}^1$

素因数の和:523

約数の個数: 32

約数和(自身を含む): 5184000

約数和(自身を除く): 2402445

約数列:

[1, 3, 5, 7, 15, 21, 35, 59, 105, 177, 295, 413, 449, 885, 1239, 1347, 2065, 2245, 3143, 6195, 6735, 9429, 15715, 26491, 47145, 79473, 132455, 185437, 397365, 556311, 927185, 2781555]

約数ペア:

[(1, 2781555), (3, 927185), (5, 556311), (7, 397365), (15, 185437), (21, 132455), (35, 79473), (59, 47145), (105, 26491), (177, 15715), (295, 9429), (413, 6735), (449, 6195), (885, 3143), (1239, 2245), (1347, 2065)]