21052053

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{337}}^1\times {\mathrm{631}}^1$

素因数の和:985

約数の個数: 24

約数和(自身を含む): 33324096

約数和(自身を除く): 12272043

約数列:

[1, 3, 9, 11, 33, 99, 337, 631, 1011, 1893, 3033, 3707, 5679, 6941, 11121, 20823, 33363, 62469, 212647, 637941, 1913823, 2339117, 7017351, 21052053]

約数ペア:

[(1, 21052053), (3, 7017351), (9, 2339117), (11, 1913823), (33, 637941), (99, 212647), (337, 62469), (631, 33363), (1011, 20823), (1893, 11121), (3033, 6941), (3707, 5679)]