278923671

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{55441}}^1$

素因数の和:55503

約数の個数: 24

約数和(自身を含む): 443979536

約数和(自身を除く): 165055865

約数列:

[1, 3, 9, 13, 39, 43, 117, 129, 387, 559, 1677, 5031, 55441, 166323, 498969, 720733, 2162199, 2383963, 6486597, 7151889, 21455667, 30991519, 92974557, 278923671]

約数ペア:

[(1, 278923671), (3, 92974557), (9, 30991519), (13, 21455667), (39, 7151889), (43, 6486597), (117, 2383963), (129, 2162199), (387, 720733), (559, 498969), (1677, 166323), (5031, 55441)]