21325255

素因数分解:

$5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{59}}^1\times {\mathrm{449}}^1$

素因数の和:543

約数の個数: 32

約数和(自身を含む): 31104000

約数和(自身を除く): 9778745

約数列:

[1, 5, 7, 23, 35, 59, 115, 161, 295, 413, 449, 805, 1357, 2065, 2245, 3143, 6785, 9499, 10327, 15715, 26491, 47495, 51635, 72289, 132455, 185437, 361445, 609293, 927185, 3046465, 4265051, 21325255]

約数ペア:

[(1, 21325255), (5, 4265051), (7, 3046465), (23, 927185), (35, 609293), (59, 361445), (115, 185437), (161, 132455), (295, 72289), (413, 51635), (449, 47495), (805, 26491), (1357, 15715), (2065, 10327), (2245, 9499), (3143, 6785)]