208162521

素因数分解:

$3^3\times 7^1\times {\mathrm{1101389}}^1$

素因数の和:1101405

約数の個数: 16

約数和(自身を含む): 352444800

約数和(自身を除く): 144282279

約数列:

[1, 3, 7, 9, 21, 27, 63, 189, 1101389, 3304167, 7709723, 9912501, 23129169, 29737503, 69387507, 208162521]

約数ペア:

[(1, 208162521), (3, 69387507), (7, 29737503), (9, 23129169), (21, 9912501), (27, 7709723), (63, 3304167), (189, 1101389)]