21488595

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^2\times {\mathrm{4957}}^1$

素因数の和:4999

約数の個数: 24

約数和(自身を含む): 36530544

約数和(自身を除く): 15041949

約数列:

[1, 3, 5, 15, 17, 51, 85, 255, 289, 867, 1445, 4335, 4957, 14871, 24785, 74355, 84269, 252807, 421345, 1264035, 1432573, 4297719, 7162865, 21488595]

約数ペア:

[(1, 21488595), (3, 7162865), (5, 4297719), (15, 1432573), (17, 1264035), (51, 421345), (85, 252807), (255, 84269), (289, 74355), (867, 24785), (1445, 14871), (4335, 4957)]