20178872816

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{383}}^1\times {\mathrm{76579}}^1$

素因数の和:77013

約数の個数: 40

約数和(自身を含む): 40110766080

約数和(自身を除く): 19931893264

約数列:

[1, 2, 4, 8, 16, 43, 86, 172, 344, 383, 688, 766, 1532, 3064, 6128, 16469, 32938, 65876, 76579, 131752, 153158, 263504, 306316, 612632, 1225264, 3292897, 6585794, 13171588, 26343176, 29329757, 52686352, 58659514, 117319028, 234638056, 469276112, 1261179551, 2522359102, 5044718204, 10089436408, 20178872816]

約数ペア:

[(1, 20178872816), (2, 10089436408), (4, 5044718204), (8, 2522359102), (16, 1261179551), (43, 469276112), (86, 234638056), (172, 117319028), (344, 58659514), (383, 52686352), (688, 29329757), (766, 26343176), (1532, 13171588), (3064, 6585794), (6128, 3292897), (16469, 1225264), (32938, 612632), (65876, 306316), (76579, 263504), (131752, 153158)]