21042867

素因数分解:

$3^1\times {\mathrm{43}}^1\times {\mathrm{157}}^1\times {\mathrm{1039}}^1$

素因数の和:1242

約数の個数: 16

約数和(自身を含む): 28920320

約数和(自身を除く): 7877453

約数列:

[1, 3, 43, 129, 157, 471, 1039, 3117, 6751, 20253, 44677, 134031, 163123, 489369, 7014289, 21042867]

約数ペア:

[(1, 21042867), (3, 7014289), (43, 489369), (129, 163123), (157, 134031), (471, 44677), (1039, 20253), (3117, 6751)]