21899857

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{2347}}^1$

素因数の和:2428

約数の個数: 16

約数和(自身を含む): 26447872

約数和(自身を除く): 4548015

約数列:

[1, 7, 31, 43, 217, 301, 1333, 2347, 9331, 16429, 72757, 100921, 509299, 706447, 3128551, 21899857]

約数ペア:

[(1, 21899857), (7, 3128551), (31, 706447), (43, 509299), (217, 100921), (301, 72757), (1333, 16429), (2347, 9331)]