256129874

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{4127}}^1$

素因数の和:4191

約数の個数: 64

約数和(自身を含む): 532611072

約数和(自身を除く): 276481198

約数列:

[1, 2, 7, 11, 13, 14, 22, 26, 31, 62, 77, 91, 143, 154, 182, 217, 286, 341, 403, 434, 682, 806, 1001, 2002, 2387, 2821, 4127, 4433, 4774, 5642, 8254, 8866, 28889, 31031, 45397, 53651, 57778, 62062, 90794, 107302, 127937, 255874, 317779, 375557, 590161, 635558, 751114, 895559, 1180322, 1407307, 1663181, 1791118, 2814614, 3326362, 4131127, 8262254, 9851149, 11642267, 18294991, 19702298, 23284534, 36589982, 128064937, 256129874]

約数ペア:

[(1, 256129874), (2, 128064937), (7, 36589982), (11, 23284534), (13, 19702298), (14, 18294991), (22, 11642267), (26, 9851149), (31, 8262254), (62, 4131127), (77, 3326362), (91, 2814614), (143, 1791118), (154, 1663181), (182, 1407307), (217, 1180322), (286, 895559), (341, 751114), (403, 635558), (434, 590161), (682, 375557), (806, 317779), (1001, 255874), (2002, 127937), (2387, 107302), (2821, 90794), (4127, 62062), (4433, 57778), (4774, 53651), (5642, 45397), (8254, 31031), (8866, 28889)]