20749521

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{12373}}^1$

素因数の和:12432

約数の個数: 16

約数和(自身を含む): 30489536

約数和(自身を除く): 9740015

約数列:

[1, 3, 13, 39, 43, 129, 559, 1677, 12373, 37119, 160849, 482547, 532039, 1596117, 6916507, 20749521]

約数ペア:

[(1, 20749521), (3, 6916507), (13, 1596117), (39, 532039), (43, 482547), (129, 160849), (559, 37119), (1677, 12373)]