21123105

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{32749}}^1$

素因数の和:32800

約数の個数: 16

約数和(自身を含む): 34584000

約数和(自身を除く): 13460895

約数列:

[1, 3, 5, 15, 43, 129, 215, 645, 32749, 98247, 163745, 491235, 1408207, 4224621, 7041035, 21123105]

約数ペア:

[(1, 21123105), (3, 7041035), (5, 4224621), (15, 1408207), (43, 491235), (129, 163745), (215, 98247), (645, 32749)]