640816144

素因数分解:

$2^4\times {\mathrm{97}}^1\times {\mathrm{283}}^1\times {\mathrm{1459}}^1$

素因数の和:1847

約数の個数: 40

約数和(自身を含む): 1259676320

約数和(自身を除く): 618860176

約数列:

[1, 2, 4, 8, 16, 97, 194, 283, 388, 566, 776, 1132, 1459, 1552, 2264, 2918, 4528, 5836, 11672, 23344, 27451, 54902, 109804, 141523, 219608, 283046, 412897, 439216, 566092, 825794, 1132184, 1651588, 2264368, 3303176, 6606352, 40051009, 80102018, 160204036, 320408072, 640816144]

約数ペア:

[(1, 640816144), (2, 320408072), (4, 160204036), (8, 80102018), (16, 40051009), (97, 6606352), (194, 3303176), (283, 2264368), (388, 1651588), (566, 1132184), (776, 825794), (1132, 566092), (1459, 439216), (1552, 412897), (2264, 283046), (2918, 219608), (4528, 141523), (5836, 109804), (11672, 54902), (23344, 27451)]