399929936

素因数分解:

$2^4\times 7^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{2647}}^1$

素因数の和:2752

約数の個数: 80

約数和(自身を含む): 945653760

約数和(自身を除く): 545723824

約数列:

[1, 2, 4, 7, 8, 14, 16, 19, 28, 38, 56, 71, 76, 112, 133, 142, 152, 266, 284, 304, 497, 532, 568, 994, 1064, 1136, 1349, 1988, 2128, 2647, 2698, 3976, 5294, 5396, 7952, 9443, 10588, 10792, 18529, 18886, 21176, 21584, 37058, 37772, 42352, 50293, 74116, 75544, 100586, 148232, 151088, 187937, 201172, 296464, 352051, 375874, 402344, 704102, 751748, 804688, 1315559, 1408204, 1503496, 2631118, 2816408, 3006992, 3570803, 5262236, 5632816, 7141606, 10524472, 14283212, 21048944, 24995621, 28566424, 49991242, 57132848, 99982484, 199964968, 399929936]

約数ペア:

[(1, 399929936), (2, 199964968), (4, 99982484), (7, 57132848), (8, 49991242), (14, 28566424), (16, 24995621), (19, 21048944), (28, 14283212), (38, 10524472), (56, 7141606), (71, 5632816), (76, 5262236), (112, 3570803), (133, 3006992), (142, 2816408), (152, 2631118), (266, 1503496), (284, 1408204), (304, 1315559), (497, 804688), (532, 751748), (568, 704102), (994, 402344), (1064, 375874), (1136, 352051), (1349, 296464), (1988, 201172), (2128, 187937), (2647, 151088), (2698, 148232), (3976, 100586), (5294, 75544), (5396, 74116), (7952, 50293), (9443, 42352), (10588, 37772), (10792, 37058), (18529, 21584), (18886, 21176)]