81181984

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{10271}}^1$

素因数の和:10313

約数の個数: 48

約数和(自身を含む): 181198080

約数和(自身を除く): 100016096

約数列:

[1, 2, 4, 8, 13, 16, 19, 26, 32, 38, 52, 76, 104, 152, 208, 247, 304, 416, 494, 608, 988, 1976, 3952, 7904, 10271, 20542, 41084, 82168, 133523, 164336, 195149, 267046, 328672, 390298, 534092, 780596, 1068184, 1561192, 2136368, 2536937, 3122384, 4272736, 5073874, 6244768, 10147748, 20295496, 40590992, 81181984]

約数ペア:

[(1, 81181984), (2, 40590992), (4, 20295496), (8, 10147748), (13, 6244768), (16, 5073874), (19, 4272736), (26, 3122384), (32, 2536937), (38, 2136368), (52, 1561192), (76, 1068184), (104, 780596), (152, 534092), (208, 390298), (247, 328672), (304, 267046), (416, 195149), (494, 164336), (608, 133523), (988, 82168), (1976, 41084), (3952, 20542), (7904, 10271)]