25781609

素因数分解:

$7^1\times {\mathrm{29}}^1\times {\mathrm{89}}^1\times {\mathrm{1427}}^1$

素因数の和:1552

約数の個数: 16

約数和(自身を含む): 30844800

約数和(自身を除く): 5063191

約数列:

[1, 7, 29, 89, 203, 623, 1427, 2581, 9989, 18067, 41383, 127003, 289681, 889021, 3683087, 25781609]

約数ペア:

[(1, 25781609), (7, 3683087), (29, 889021), (89, 289681), (203, 127003), (623, 41383), (1427, 18067), (2581, 9989)]