21423753

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{2579}}^1$

素因数の和:2669

約数の個数: 24

約数和(自身を含む): 33808320

約数和(自身を除く): 12384567

約数列:

[1, 3, 9, 13, 39, 71, 117, 213, 639, 923, 2579, 2769, 7737, 8307, 23211, 33527, 100581, 183109, 301743, 549327, 1647981, 2380417, 7141251, 21423753]

約数ペア:

[(1, 21423753), (3, 7141251), (9, 2380417), (13, 1647981), (39, 549327), (71, 301743), (117, 183109), (213, 100581), (639, 33527), (923, 23211), (2579, 8307), (2769, 7737)]