21921405

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{132857}}^1$

素因数の和:132876

約数の個数: 16

約数和(自身を含む): 38263104

約数和(自身を除く): 16341699

約数列:

[1, 3, 5, 11, 15, 33, 55, 165, 132857, 398571, 664285, 1461427, 1992855, 4384281, 7307135, 21921405]

約数ペア:

[(1, 21921405), (3, 7307135), (5, 4384281), (11, 1992855), (15, 1461427), (33, 664285), (55, 398571), (165, 132857)]