19781674

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{10103}}^1$

素因数の和:10205

約数の個数: 16

約数和(自身を含む): 32736960

約数和(自身を除く): 12955286

約数列:

[1, 2, 11, 22, 89, 178, 979, 1958, 10103, 20206, 111133, 222266, 899167, 1798334, 9890837, 19781674]

約数ペア:

[(1, 19781674), (2, 9890837), (11, 1798334), (22, 899167), (89, 222266), (178, 111133), (979, 20206), (1958, 10103)]