27821105

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{13807}}^1$

素因数の和:13856

約数の個数: 16

約数和(自身を含む): 37115904

約数和(自身を除く): 9294799

約数列:

[1, 5, 13, 31, 65, 155, 403, 2015, 13807, 69035, 179491, 428017, 897455, 2140085, 5564221, 27821105]

約数ペア:

[(1, 27821105), (5, 5564221), (13, 2140085), (31, 897455), (65, 428017), (155, 179491), (403, 69035), (2015, 13807)]