21681517

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{107}}^1\times {\mathrm{109}}^1$

素因数の和:253

約数の個数: 24

約数和(自身を含む): 26088480

約数和(自身を除く): 4406963

約数列:

[1, 11, 13, 107, 109, 143, 169, 1177, 1199, 1391, 1417, 1859, 11663, 15301, 15587, 18083, 18421, 128293, 151619, 198913, 202631, 1667809, 1971047, 21681517]

約数ペア:

[(1, 21681517), (11, 1971047), (13, 1667809), (107, 202631), (109, 198913), (143, 151619), (169, 128293), (1177, 18421), (1199, 18083), (1391, 15587), (1417, 15301), (1859, 11663)]