18979512

素因数分解:

$2^3\times 3^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{347}}^1$

素因数の和:452

約数の個数: 64

約数和(自身を含む): 49610880

約数和(自身を除く): 30631368

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 43, 53, 86, 106, 129, 159, 172, 212, 258, 318, 344, 347, 424, 516, 636, 694, 1032, 1041, 1272, 1388, 2082, 2279, 2776, 4164, 4558, 6837, 8328, 9116, 13674, 14921, 18232, 18391, 27348, 29842, 36782, 44763, 54696, 55173, 59684, 73564, 89526, 110346, 119368, 147128, 179052, 220692, 358104, 441384, 790813, 1581626, 2372439, 3163252, 4744878, 6326504, 9489756, 18979512]

約数ペア:

[(1, 18979512), (2, 9489756), (3, 6326504), (4, 4744878), (6, 3163252), (8, 2372439), (12, 1581626), (24, 790813), (43, 441384), (53, 358104), (86, 220692), (106, 179052), (129, 147128), (159, 119368), (172, 110346), (212, 89526), (258, 73564), (318, 59684), (344, 55173), (347, 54696), (424, 44763), (516, 36782), (636, 29842), (694, 27348), (1032, 18391), (1041, 18232), (1272, 14921), (1388, 13674), (2082, 9116), (2279, 8328), (2776, 6837), (4164, 4558)]