21304539

素因数分解:

$3^5\times {\mathrm{73}}^1\times {\mathrm{1201}}^1$

素因数の和:1289

約数の個数: 24

約数和(自身を含む): 32377072

約数和(自身を除く): 11072533

約数列:

[1, 3, 9, 27, 73, 81, 219, 243, 657, 1201, 1971, 3603, 5913, 10809, 17739, 32427, 87673, 97281, 263019, 291843, 789057, 2367171, 7101513, 21304539]

約数ペア:

[(1, 21304539), (3, 7101513), (9, 2367171), (27, 789057), (73, 291843), (81, 263019), (219, 97281), (243, 87673), (657, 32427), (1201, 17739), (1971, 10809), (3603, 5913)]