18640341

素因数分解:

$3^3\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{397}}^1$

素因数の和:490

約数の個数: 32

約数和(自身を含む): 29038080

約数和(自身を除く): 10397739

約数列:

[1, 3, 9, 27, 37, 47, 111, 141, 333, 397, 423, 999, 1191, 1269, 1739, 3573, 5217, 10719, 14689, 15651, 18659, 44067, 46953, 55977, 132201, 167931, 396603, 503793, 690383, 2071149, 6213447, 18640341]

約数ペア:

[(1, 18640341), (3, 6213447), (9, 2071149), (27, 690383), (37, 503793), (47, 396603), (111, 167931), (141, 132201), (333, 55977), (397, 46953), (423, 44067), (999, 18659), (1191, 15651), (1269, 14689), (1739, 10719), (3573, 5217)]