661237874

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{499}}^1$

素因数の和:639

約数の個数: 64

約数和(自身を含む): 1175040000

約数和(自身を除く): 513802126

約数列:

[1, 2, 11, 22, 29, 31, 58, 62, 67, 134, 319, 341, 499, 638, 682, 737, 899, 998, 1474, 1798, 1943, 2077, 3886, 4154, 5489, 9889, 10978, 14471, 15469, 19778, 21373, 22847, 28942, 30938, 33433, 42746, 45694, 60233, 66866, 120466, 159181, 170159, 318362, 340318, 367763, 448601, 662563, 735526, 897202, 969557, 1036423, 1325126, 1939114, 2072846, 4934611, 9869222, 10665127, 11400653, 21330254, 22801306, 30056267, 60112534, 330618937, 661237874]

約数ペア:

[(1, 661237874), (2, 330618937), (11, 60112534), (22, 30056267), (29, 22801306), (31, 21330254), (58, 11400653), (62, 10665127), (67, 9869222), (134, 4934611), (319, 2072846), (341, 1939114), (499, 1325126), (638, 1036423), (682, 969557), (737, 897202), (899, 735526), (998, 662563), (1474, 448601), (1798, 367763), (1943, 340318), (2077, 318362), (3886, 170159), (4154, 159181), (5489, 120466), (9889, 66866), (10978, 60233), (14471, 45694), (15469, 42746), (19778, 33433), (21373, 30938), (22847, 28942)]