208990197

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{179}}^1\times {\mathrm{587}}^1$

素因数の和:802

約数の個数: 48

約数和(自身を含む): 346731840

約数和(自身を除く): 137741643

約数列:

[1, 3, 9, 13, 17, 39, 51, 117, 153, 179, 221, 537, 587, 663, 1611, 1761, 1989, 2327, 3043, 5283, 6981, 7631, 9129, 9979, 20943, 22893, 27387, 29937, 39559, 68679, 89811, 105073, 118677, 129727, 315219, 356031, 389181, 945657, 1167543, 1365949, 1786241, 4097847, 5358723, 12293541, 16076169, 23221133, 69663399, 208990197]

約数ペア:

[(1, 208990197), (3, 69663399), (9, 23221133), (13, 16076169), (17, 12293541), (39, 5358723), (51, 4097847), (117, 1786241), (153, 1365949), (179, 1167543), (221, 945657), (537, 389181), (587, 356031), (663, 315219), (1611, 129727), (1761, 118677), (1989, 105073), (2327, 89811), (3043, 68679), (5283, 39559), (6981, 29937), (7631, 27387), (9129, 22893), (9979, 20943)]