21275705

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{13339}}^1$

素因数の和:13384

約数の個数: 16

約数和(自身を含む): 28814400

約数和(自身を除く): 7538695

約数列:

[1, 5, 11, 29, 55, 145, 319, 1595, 13339, 66695, 146729, 386831, 733645, 1934155, 4255141, 21275705]

約数ペア:

[(1, 21275705), (5, 4255141), (11, 1934155), (29, 733645), (55, 386831), (145, 146729), (319, 66695), (1595, 13339)]