21170105

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{101}}^1\times {\mathrm{103}}^1$

素因数の和:257

約数の個数: 32

約数和(自身を含む): 29023488

約数和(自身を除く): 7853383

約数列:

[1, 5, 11, 37, 55, 101, 103, 185, 407, 505, 515, 1111, 1133, 2035, 3737, 3811, 5555, 5665, 10403, 18685, 19055, 41107, 41921, 52015, 114433, 205535, 209605, 384911, 572165, 1924555, 4234021, 21170105]

約数ペア:

[(1, 21170105), (5, 4234021), (11, 1924555), (37, 572165), (55, 384911), (101, 209605), (103, 205535), (185, 114433), (407, 52015), (505, 41921), (515, 41107), (1111, 19055), (1133, 18685), (2035, 10403), (3737, 5665), (3811, 5555)]