18109987

素因数分解:

$7^1\times {\mathrm{41}}^1\times {\mathrm{89}}^1\times {\mathrm{709}}^1$

素因数の和:846

約数の個数: 16

約数和(自身を含む): 21470400

約数和(自身を除く): 3360413

約数列:

[1, 7, 41, 89, 287, 623, 709, 3649, 4963, 25543, 29069, 63101, 203483, 441707, 2587141, 18109987]

約数ペア:

[(1, 18109987), (7, 2587141), (41, 441707), (89, 203483), (287, 63101), (623, 29069), (709, 25543), (3649, 4963)]