2780855

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{233}}^1$

素因数の和:287

約数の個数: 32

約数和(自身を含む): 4313088

約数和(自身を除く): 1532233

約数列:

[1, 5, 7, 11, 31, 35, 55, 77, 155, 217, 233, 341, 385, 1085, 1165, 1631, 1705, 2387, 2563, 7223, 8155, 11935, 12815, 17941, 36115, 50561, 79453, 89705, 252805, 397265, 556171, 2780855]

約数ペア:

[(1, 2780855), (5, 556171), (7, 397265), (11, 252805), (31, 89705), (35, 79453), (55, 50561), (77, 36115), (155, 17941), (217, 12815), (233, 11935), (341, 8155), (385, 7223), (1085, 2563), (1165, 2387), (1631, 1705)]