9090909

素因数分解:

$3^2\times {\mathrm{73}}^1\times {\mathrm{101}}^1\times {\mathrm{137}}^1$

素因数の和:317

約数の個数: 24

約数和(自身を含む): 13541112

約数和(自身を除く): 4450203

約数列:

[1, 3, 9, 73, 101, 137, 219, 303, 411, 657, 909, 1233, 7373, 10001, 13837, 22119, 30003, 41511, 66357, 90009, 124533, 1010101, 3030303, 9090909]

約数ペア:

[(1, 9090909), (3, 3030303), (9, 1010101), (73, 124533), (101, 90009), (137, 66357), (219, 41511), (303, 30003), (411, 22119), (657, 13837), (909, 10001), (1233, 7373)]