19981072

素因数分解:

$2^4\times {\mathrm{443}}^1\times {\mathrm{2819}}^1$

素因数の和:3270

約数の個数: 20

約数和(自身を含む): 38814480

約数和(自身を除く): 18833408

約数列:

[1, 2, 4, 8, 16, 443, 886, 1772, 2819, 3544, 5638, 7088, 11276, 22552, 45104, 1248817, 2497634, 4995268, 9990536, 19981072]

約数ペア:

[(1, 19981072), (2, 9990536), (4, 4995268), (8, 2497634), (16, 1248817), (443, 45104), (886, 22552), (1772, 11276), (2819, 7088), (3544, 5638)]