21870255

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{132547}}^1$

素因数の和:132566

約数の個数: 16

約数和(自身を含む): 38173824

約数和(自身を除く): 16303569

約数列:

[1, 3, 5, 11, 15, 33, 55, 165, 132547, 397641, 662735, 1458017, 1988205, 4374051, 7290085, 21870255]

約数ペア:

[(1, 21870255), (3, 7290085), (5, 4374051), (11, 1988205), (15, 1458017), (33, 662735), (55, 397641), (165, 132547)]