18984501

素因数分解:

$3^2\times {\mathrm{89}}^1\times {\mathrm{137}}^1\times {\mathrm{173}}^1$

素因数の和:405

約数の個数: 24

約数和(自身を含む): 28094040

約数和(自身を除く): 9109539

約数列:

[1, 3, 9, 89, 137, 173, 267, 411, 519, 801, 1233, 1557, 12193, 15397, 23701, 36579, 46191, 71103, 109737, 138573, 213309, 2109389, 6328167, 18984501]

約数ペア:

[(1, 18984501), (3, 6328167), (9, 2109389), (89, 213309), (137, 138573), (173, 109737), (267, 71103), (411, 46191), (519, 36579), (801, 23701), (1233, 15397), (1557, 12193)]