261208516

素因数分解:

$2^2\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{193}}^1\times {\mathrm{313}}^1$

素因数の和:580

約数の個数: 48

約数和(自身を含む): 491226624

約数和(自身を除く): 230018108

約数列:

[1, 2, 4, 23, 46, 47, 92, 94, 188, 193, 313, 386, 626, 772, 1081, 1252, 2162, 4324, 4439, 7199, 8878, 9071, 14398, 14711, 17756, 18142, 28796, 29422, 36284, 58844, 60409, 120818, 208633, 241636, 338353, 417266, 676706, 834532, 1353412, 1389407, 2778814, 2839223, 5557628, 5678446, 11356892, 65302129, 130604258, 261208516]

約数ペア:

[(1, 261208516), (2, 130604258), (4, 65302129), (23, 11356892), (46, 5678446), (47, 5557628), (92, 2839223), (94, 2778814), (188, 1389407), (193, 1353412), (313, 834532), (386, 676706), (626, 417266), (772, 338353), (1081, 241636), (1252, 208633), (2162, 120818), (4324, 60409), (4439, 58844), (7199, 36284), (8878, 29422), (9071, 28796), (14398, 18142), (14711, 17756)]