81247075

素因数分解:

$5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{503}}^1$

素因数の和:604

約数の個数: 48

約数和(自身を含む): 125991936

約数和(自身を除く): 44744861

約数列:

[1, 5, 7, 13, 25, 35, 65, 71, 91, 175, 325, 355, 455, 497, 503, 923, 1775, 2275, 2485, 2515, 3521, 4615, 6461, 6539, 12425, 12575, 17605, 23075, 32305, 32695, 35713, 45773, 88025, 161525, 163475, 178565, 228865, 249991, 464269, 892825, 1144325, 1249955, 2321345, 3249883, 6249775, 11606725, 16249415, 81247075]

約数ペア:

[(1, 81247075), (5, 16249415), (7, 11606725), (13, 6249775), (25, 3249883), (35, 2321345), (65, 1249955), (71, 1144325), (91, 892825), (175, 464269), (325, 249991), (355, 228865), (455, 178565), (497, 163475), (503, 161525), (923, 88025), (1775, 45773), (2275, 35713), (2485, 32695), (2515, 32305), (3521, 23075), (4615, 17605), (6461, 12575), (6539, 12425)]