21071247

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{8597}}^1$

素因数の和:8662

約数の個数: 16

約数和(自身を含む): 30264960

約数和(自身を除く): 9193713

約数列:

[1, 3, 19, 43, 57, 129, 817, 2451, 8597, 25791, 163343, 369671, 490029, 1109013, 7023749, 21071247]

約数ペア:

[(1, 21071247), (3, 7023749), (19, 1109013), (43, 490029), (57, 369671), (129, 163343), (817, 25791), (2451, 8597)]