19497904

素因数分解:

$2^4\times {\mathrm{521}}^1\times {\mathrm{2339}}^1$

素因数の和:2868

約数の個数: 20

約数和(自身を含む): 37865880

約数和(自身を除く): 18367976

約数列:

[1, 2, 4, 8, 16, 521, 1042, 2084, 2339, 4168, 4678, 8336, 9356, 18712, 37424, 1218619, 2437238, 4874476, 9748952, 19497904]

約数ペア:

[(1, 19497904), (2, 9748952), (4, 4874476), (8, 2437238), (16, 1218619), (521, 37424), (1042, 18712), (2084, 9356), (2339, 8336), (4168, 4678)]