19780002

素因数分解:

$2^1\times 3^2\times {\mathrm{11}}^1\times {\mathrm{283}}^1\times {\mathrm{353}}^1$

素因数の和:655

約数の個数: 48

約数和(自身を含む): 47050848

約数和(自身を除く): 27270846

約数列:

[1, 2, 3, 6, 9, 11, 18, 22, 33, 66, 99, 198, 283, 353, 566, 706, 849, 1059, 1698, 2118, 2547, 3113, 3177, 3883, 5094, 6226, 6354, 7766, 9339, 11649, 18678, 23298, 28017, 34947, 56034, 69894, 99899, 199798, 299697, 599394, 899091, 1098889, 1798182, 2197778, 3296667, 6593334, 9890001, 19780002]

約数ペア:

[(1, 19780002), (2, 9890001), (3, 6593334), (6, 3296667), (9, 2197778), (11, 1798182), (18, 1098889), (22, 899091), (33, 599394), (66, 299697), (99, 199798), (198, 99899), (283, 69894), (353, 56034), (566, 34947), (706, 28017), (849, 23298), (1059, 18678), (1698, 11649), (2118, 9339), (2547, 7766), (3113, 6354), (3177, 6226), (3883, 5094)]