21418857

素因数分解:

$3^3\times {\mathrm{73}}^1\times {\mathrm{10867}}^1$

素因数の和:10949

約数の個数: 16

約数和(自身を含む): 32169280

約数和(自身を除く): 10750423

約数列:

[1, 3, 9, 27, 73, 219, 657, 1971, 10867, 32601, 97803, 293409, 793291, 2379873, 7139619, 21418857]

約数ペア:

[(1, 21418857), (3, 7139619), (9, 2379873), (27, 793291), (73, 293409), (219, 97803), (657, 32601), (1971, 10867)]