21982768

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{80819}}^1$

素因数の和:80844

約数の個数: 20

約数和(自身を含む): 45097560

約数和(自身を除く): 23114792

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 80819, 161638, 323276, 646552, 1293104, 1373923, 2747846, 5495692, 10991384, 21982768]

約数ペア:

[(1, 21982768), (2, 10991384), (4, 5495692), (8, 2747846), (16, 1373923), (17, 1293104), (34, 646552), (68, 323276), (136, 161638), (272, 80819)]