27720355

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{13757}}^1$

素因数の和:13806

約数の個数: 16

約数和(自身を含む): 36981504

約数和(自身を除く): 9261149

約数列:

[1, 5, 13, 31, 65, 155, 403, 2015, 13757, 68785, 178841, 426467, 894205, 2132335, 5544071, 27720355]

約数ペア:

[(1, 27720355), (5, 5544071), (13, 2132335), (31, 894205), (65, 426467), (155, 178841), (403, 68785), (2015, 13757)]