21252255

素因数分解:

$3^1\times 5^1\times {\mathrm{811}}^1\times {\mathrm{1747}}^1$

素因数の和:2566

約数の個数: 16

約数和(自身を含む): 34065024

約数和(自身を除く): 12812769

約数列:

[1, 3, 5, 15, 811, 1747, 2433, 4055, 5241, 8735, 12165, 26205, 1416817, 4250451, 7084085, 21252255]

約数ペア:

[(1, 21252255), (3, 7084085), (5, 4250451), (15, 1416817), (811, 26205), (1747, 12165), (2433, 8735), (4055, 5241)]