20972097

素因数分解:

$3^2\times {\mathrm{73}}^1\times {\mathrm{137}}^1\times {\mathrm{233}}^1$

素因数の和:449

約数の個数: 24

約数和(自身を含む): 31064904

約数和(自身を除く): 10092807

約数列:

[1, 3, 9, 73, 137, 219, 233, 411, 657, 699, 1233, 2097, 10001, 17009, 30003, 31921, 51027, 90009, 95763, 153081, 287289, 2330233, 6990699, 20972097]

約数ペア:

[(1, 20972097), (3, 6990699), (9, 2330233), (73, 287289), (137, 153081), (219, 95763), (233, 90009), (411, 51027), (657, 31921), (699, 30003), (1233, 17009), (2097, 10001)]