19999642

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{557}}^1\times {\mathrm{1381}}^1$

素因数の和:1953

約数の個数: 16

約数和(自身を含む): 32388552

約数和(自身を除く): 12388910

約数列:

[1, 2, 13, 26, 557, 1114, 1381, 2762, 7241, 14482, 17953, 35906, 769217, 1538434, 9999821, 19999642]

約数ペア:

[(1, 19999642), (2, 9999821), (13, 1538434), (26, 769217), (557, 35906), (1114, 17953), (1381, 14482), (2762, 7241)]