21090013

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{5717}}^1$

素因数の和:5772

約数の個数: 16

約数和(自身を含む): 26348544

約数和(自身を除く): 5258531

約数列:

[1, 7, 17, 31, 119, 217, 527, 3689, 5717, 40019, 97189, 177227, 680323, 1240589, 3012859, 21090013]

約数ペア:

[(1, 21090013), (7, 3012859), (17, 1240589), (31, 680323), (119, 177227), (217, 97189), (527, 40019), (3689, 5717)]