18978938

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{479}}^1\times {\mathrm{1801}}^1$

素因数の和:2293

約数の個数: 16

約数和(自身を含む): 31138560

約数和(自身を除く): 12159622

約数列:

[1, 2, 11, 22, 479, 958, 1801, 3602, 5269, 10538, 19811, 39622, 862679, 1725358, 9489469, 18978938]

約数ペア:

[(1, 18978938), (2, 9489469), (11, 1725358), (22, 862679), (479, 39622), (958, 19811), (1801, 10538), (3602, 5269)]