20719906

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{113}}^1\times {\mathrm{5393}}^1$

素因数の和:5525

約数の個数: 16

約数和(自身を含む): 33205464

約数和(自身を除く): 12485558

約数列:

[1, 2, 17, 34, 113, 226, 1921, 3842, 5393, 10786, 91681, 183362, 609409, 1218818, 10359953, 20719906]

約数ペア:

[(1, 20719906), (2, 10359953), (17, 1218818), (34, 609409), (113, 183362), (226, 91681), (1921, 10786), (3842, 5393)]