18720222

素因数分解:

$2^1\times 3^1\times {\mathrm{43}}^1\times {\mathrm{72559}}^1$

素因数の和:72607

約数の個数: 16

約数和(自身を含む): 38311680

約数和(自身を除く): 19591458

約数列:

[1, 2, 3, 6, 43, 86, 129, 258, 72559, 145118, 217677, 435354, 3120037, 6240074, 9360111, 18720222]

約数ペア:

[(1, 18720222), (2, 9360111), (3, 6240074), (6, 3120037), (43, 435354), (86, 217677), (129, 145118), (258, 72559)]