21262945

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{13331}}^1$

素因数の和:13376

約数の個数: 16

約数和(自身を含む): 28797120

約数和(自身を除く): 7534175

約数列:

[1, 5, 11, 29, 55, 145, 319, 1595, 13331, 66655, 146641, 386599, 733205, 1932995, 4252589, 21262945]

約数ペア:

[(1, 21262945), (5, 4252589), (11, 1932995), (29, 733205), (55, 386599), (145, 146641), (319, 66655), (1595, 13331)]