18612748

素因数分解:

$2^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{97}}^1$

素因数の和:215

約数の個数: 72

約数和(自身を含む): 42230160

約数和(自身を除く): 23617412

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 49, 77, 89, 97, 98, 154, 178, 194, 196, 308, 356, 388, 539, 623, 679, 979, 1067, 1078, 1246, 1358, 1958, 2134, 2156, 2492, 2716, 3916, 4268, 4361, 4753, 6853, 7469, 8633, 8722, 9506, 13706, 14938, 17266, 17444, 19012, 27412, 29876, 34532, 47971, 52283, 60431, 94963, 95942, 104566, 120862, 189926, 191884, 209132, 241724, 379852, 423017, 664741, 846034, 1329482, 1692068, 2658964, 4653187, 9306374, 18612748]

約数ペア:

[(1, 18612748), (2, 9306374), (4, 4653187), (7, 2658964), (11, 1692068), (14, 1329482), (22, 846034), (28, 664741), (44, 423017), (49, 379852), (77, 241724), (89, 209132), (97, 191884), (98, 189926), (154, 120862), (178, 104566), (194, 95942), (196, 94963), (308, 60431), (356, 52283), (388, 47971), (539, 34532), (623, 29876), (679, 27412), (979, 19012), (1067, 17444), (1078, 17266), (1246, 14938), (1358, 13706), (1958, 9506), (2134, 8722), (2156, 8633), (2492, 7469), (2716, 6853), (3916, 4753), (4268, 4361)]