81353412

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{449}}^1\times {\mathrm{719}}^1$

素因数の和:1185

約数の個数: 72

約数和(自身を含む): 235872000

約数和(自身を除く): 154518588

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 126, 252, 449, 719, 898, 1347, 1438, 1796, 2157, 2694, 2876, 3143, 4041, 4314, 5033, 5388, 6286, 6471, 8082, 8628, 9429, 10066, 12572, 12942, 15099, 16164, 18858, 20132, 25884, 28287, 30198, 37716, 45297, 56574, 60396, 90594, 113148, 181188, 322831, 645662, 968493, 1291324, 1936986, 2259817, 2905479, 3873972, 4519634, 5810958, 6779451, 9039268, 11621916, 13558902, 20338353, 27117804, 40676706, 81353412]

約数ペア:

[(1, 81353412), (2, 40676706), (3, 27117804), (4, 20338353), (6, 13558902), (7, 11621916), (9, 9039268), (12, 6779451), (14, 5810958), (18, 4519634), (21, 3873972), (28, 2905479), (36, 2259817), (42, 1936986), (63, 1291324), (84, 968493), (126, 645662), (252, 322831), (449, 181188), (719, 113148), (898, 90594), (1347, 60396), (1438, 56574), (1796, 45297), (2157, 37716), (2694, 30198), (2876, 28287), (3143, 25884), (4041, 20132), (4314, 18858), (5033, 16164), (5388, 15099), (6286, 12942), (6471, 12572), (8082, 10066), (8628, 9429)]