81752240

素因数分解:

$2^4\times 5^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{389}}^1$

素因数の和:510

約数の個数: 80

約数和(自身を含む): 198469440

約数和(自身を除く): 116717200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 37, 40, 71, 74, 80, 142, 148, 185, 284, 296, 355, 370, 389, 568, 592, 710, 740, 778, 1136, 1420, 1480, 1556, 1945, 2627, 2840, 2960, 3112, 3890, 5254, 5680, 6224, 7780, 10508, 13135, 14393, 15560, 21016, 26270, 27619, 28786, 31120, 42032, 52540, 55238, 57572, 71965, 105080, 110476, 115144, 138095, 143930, 210160, 220952, 230288, 276190, 287860, 441904, 552380, 575720, 1021903, 1104760, 1151440, 2043806, 2209520, 4087612, 5109515, 8175224, 10219030, 16350448, 20438060, 40876120, 81752240]

約数ペア:

[(1, 81752240), (2, 40876120), (4, 20438060), (5, 16350448), (8, 10219030), (10, 8175224), (16, 5109515), (20, 4087612), (37, 2209520), (40, 2043806), (71, 1151440), (74, 1104760), (80, 1021903), (142, 575720), (148, 552380), (185, 441904), (284, 287860), (296, 276190), (355, 230288), (370, 220952), (389, 210160), (568, 143930), (592, 138095), (710, 115144), (740, 110476), (778, 105080), (1136, 71965), (1420, 57572), (1480, 55238), (1556, 52540), (1945, 42032), (2627, 31120), (2840, 28786), (2960, 27619), (3112, 26270), (3890, 21016), (5254, 15560), (5680, 14393), (6224, 13135), (7780, 10508)]