21689025

素因数分解:

$3^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{17011}}^1$

素因数の和:17041

約数の個数: 24

約数和(自身を含む): 37970784

約数和(自身を除く): 16281759

約数列:

[1, 3, 5, 15, 17, 25, 51, 75, 85, 255, 425, 1275, 17011, 51033, 85055, 255165, 289187, 425275, 867561, 1275825, 1445935, 4337805, 7229675, 21689025]

約数ペア:

[(1, 21689025), (3, 7229675), (5, 4337805), (15, 1445935), (17, 1275825), (25, 867561), (51, 425275), (75, 289187), (85, 255165), (255, 85055), (425, 51033), (1275, 17011)]