217697779

素因数分解:

${\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{97}}^1\times {\mathrm{5569}}^1$

素因数の和:5710

約数の個数: 16

約数和(自身を含む): 244545280

約数和(自身を除く): 26847501

約数列:

[1, 13, 31, 97, 403, 1261, 3007, 5569, 39091, 72397, 172639, 540193, 2244307, 7022509, 16745983, 217697779]

約数ペア:

[(1, 217697779), (13, 16745983), (31, 7022509), (97, 2244307), (403, 540193), (1261, 172639), (3007, 72397), (5569, 39091)]