21000398545

素因数分解:

$5^1\times 7^1\times {\mathrm{3119}}^1\times {\mathrm{192373}}^1$

素因数の和:195504

約数の個数: 16

約数和(自身を含む): 28809930240

約数和(自身を除く): 7809531695

約数列:

[1, 5, 7, 35, 3119, 15595, 21833, 109165, 192373, 961865, 1346611, 6733055, 600011387, 3000056935, 4200079709, 21000398545]

約数ペア:

[(1, 21000398545), (5, 4200079709), (7, 3000056935), (35, 600011387), (3119, 6733055), (15595, 1346611), (21833, 961865), (109165, 192373)]