28785779

素因数分解:

${\mathrm{11}}^2\times {\mathrm{19}}^2\times {\mathrm{659}}^1$

素因数の和:719

約数の個数: 18

約数和(自身を含む): 33444180

約数和(自身を除く): 4658401

約数列:

[1, 11, 19, 121, 209, 361, 659, 2299, 3971, 7249, 12521, 43681, 79739, 137731, 237899, 1515041, 2616889, 28785779]

約数ペア:

[(1, 28785779), (11, 2616889), (19, 1515041), (121, 237899), (209, 137731), (361, 79739), (659, 43681), (2299, 12521), (3971, 7249)]