19785838

素因数分解:

$2^1\times {\mathrm{61}}^1\times {\mathrm{127}}^1\times {\mathrm{1277}}^1$

素因数の和:1467

約数の個数: 16

約数和(自身を含む): 30426624

約数和(自身を除く): 10640786

約数列:

[1, 2, 61, 122, 127, 254, 1277, 2554, 7747, 15494, 77897, 155794, 162179, 324358, 9892919, 19785838]

約数ペア:

[(1, 19785838), (2, 9892919), (61, 324358), (122, 162179), (127, 155794), (254, 77897), (1277, 15494), (2554, 7747)]