21277065

素因数分解:

$3^1\times 5^1\times {\mathrm{311}}^1\times {\mathrm{4561}}^1$

素因数の和:4880

約数の個数: 16

約数和(自身を含む): 34160256

約数和(自身を除く): 12883191

約数列:

[1, 3, 5, 15, 311, 933, 1555, 4561, 4665, 13683, 22805, 68415, 1418471, 4255413, 7092355, 21277065]

約数ペア:

[(1, 21277065), (3, 7092355), (5, 4255413), (15, 1418471), (311, 68415), (933, 22805), (1555, 13683), (4561, 4665)]