21562707

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{61}}^1\times {\mathrm{109}}^1$

素因数の和:243

約数の個数: 32

約数和(自身を含む): 31426560

約数和(自身を除く): 9863853

約数列:

[1, 3, 23, 47, 61, 69, 109, 141, 183, 327, 1081, 1403, 2507, 2867, 3243, 4209, 5123, 6649, 7521, 8601, 15369, 19947, 65941, 117829, 152927, 197823, 312503, 353487, 458781, 937509, 7187569, 21562707]

約数ペア:

[(1, 21562707), (3, 7187569), (23, 937509), (47, 458781), (61, 353487), (69, 312503), (109, 197823), (141, 152927), (183, 117829), (327, 65941), (1081, 19947), (1403, 15369), (2507, 8601), (2867, 7521), (3243, 6649), (4209, 5123)]