20805209

素因数分解:

${\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{619}}^1$

素因数の和:728

約数の個数: 16

約数和(自身を含む): 23064000

約数和(自身を除く): 2258791

約数列:

[1, 19, 29, 61, 551, 619, 1159, 1769, 11761, 17951, 33611, 37759, 341069, 717421, 1095011, 20805209]

約数ペア:

[(1, 20805209), (19, 1095011), (29, 717421), (61, 341069), (551, 37759), (619, 33611), (1159, 17951), (1769, 11761)]