13278785

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{197}}^1$

素因数の和:293

約数の個数: 32

約数和(自身を含む): 18561312

約数和(自身を除く): 5282527

約数列:

[1, 5, 13, 17, 61, 65, 85, 197, 221, 305, 793, 985, 1037, 1105, 2561, 3349, 3965, 5185, 12017, 12805, 13481, 16745, 43537, 60085, 67405, 156221, 204289, 217685, 781105, 1021445, 2655757, 13278785]

約数ペア:

[(1, 13278785), (5, 2655757), (13, 1021445), (17, 781105), (61, 217685), (65, 204289), (85, 156221), (197, 67405), (221, 60085), (305, 43537), (793, 16745), (985, 13481), (1037, 12805), (1105, 12017), (2561, 5185), (3349, 3965)]