21640143

素因数分解:

$3^1\times 7^1\times {\mathrm{223}}^1\times {\mathrm{4621}}^1$

素因数の和:4854

約数の個数: 16

約数和(自身を含む): 33130496

約数和(自身を除く): 11490353

約数列:

[1, 3, 7, 21, 223, 669, 1561, 4621, 4683, 13863, 32347, 97041, 1030483, 3091449, 7213381, 21640143]

約数ペア:

[(1, 21640143), (3, 7213381), (7, 3091449), (21, 1030483), (223, 97041), (669, 32347), (1561, 13863), (4621, 4683)]