18974739

素因数分解:

$3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{21013}}^1$

素因数の和:21066

約数の個数: 16

約数和(自身を含む): 29587712

約数和(自身を除く): 10612973

約数列:

[1, 3, 7, 21, 43, 129, 301, 903, 21013, 63039, 147091, 441273, 903559, 2710677, 6324913, 18974739]

約数ペア:

[(1, 18974739), (3, 6324913), (7, 2710677), (21, 903559), (43, 441273), (129, 147091), (301, 63039), (903, 21013)]