20129758

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{643}}^1\times {\mathrm{1423}}^1$

素因数の和:2079

約数の個数: 16

約数和(自身を含む): 33014016

約数和(自身を除く): 12884258

約数列:

[1, 2, 11, 22, 643, 1286, 1423, 2846, 7073, 14146, 15653, 31306, 914989, 1829978, 10064879, 20129758]

約数ペア:

[(1, 20129758), (2, 10064879), (11, 1829978), (22, 914989), (643, 31306), (1286, 15653), (1423, 14146), (2846, 7073)]