18978918

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{451879}}^1$

素因数の和:451891

約数の個数: 16

約数和(自身を含む): 43380480

約数和(自身を除く): 24401562

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 451879, 903758, 1355637, 2711274, 3163153, 6326306, 9489459, 18978918]

約数ペア:

[(1, 18978918), (2, 9489459), (3, 6326306), (6, 3163153), (7, 2711274), (14, 1355637), (21, 903758), (42, 451879)]