638676

素因数分解:

$2^2\times 3^2\times {\mathrm{113}}^1\times {\mathrm{157}}^1$

素因数の和:280

約数の個数: 36

約数和(自身を含む): 1639092

約数和(自身を除く): 1000416

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 113, 157, 226, 314, 339, 452, 471, 628, 678, 942, 1017, 1356, 1413, 1884, 2034, 2826, 4068, 5652, 17741, 35482, 53223, 70964, 106446, 159669, 212892, 319338, 638676]

約数ペア:

[(1, 638676), (2, 319338), (3, 212892), (4, 159669), (6, 106446), (9, 70964), (12, 53223), (18, 35482), (36, 17741), (113, 5652), (157, 4068), (226, 2826), (314, 2034), (339, 1884), (452, 1413), (471, 1356), (628, 1017), (678, 942)]