18888921

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{123457}}^1$

素因数の和:123480

約数の個数: 12

約数和(自身を含む): 28889172

約数和(自身を除く): 10000251

約数列:

[1, 3, 9, 17, 51, 153, 123457, 370371, 1111113, 2098769, 6296307, 18888921]

約数ペア:

[(1, 18888921), (3, 6296307), (9, 2098769), (17, 1111113), (51, 370371), (153, 123457)]