81161080

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{2027}}^1$

素因数の和:2069

約数の個数: 128

約数和(自身を含む): 245306880

約数和(自身を除く): 164145800

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 13, 14, 20, 22, 26, 28, 35, 40, 44, 52, 55, 56, 65, 70, 77, 88, 91, 104, 110, 130, 140, 143, 154, 182, 220, 260, 280, 286, 308, 364, 385, 440, 455, 520, 572, 616, 715, 728, 770, 910, 1001, 1144, 1430, 1540, 1820, 2002, 2027, 2860, 3080, 3640, 4004, 4054, 5005, 5720, 8008, 8108, 10010, 10135, 14189, 16216, 20020, 20270, 22297, 26351, 28378, 40040, 40540, 44594, 52702, 56756, 70945, 81080, 89188, 105404, 111485, 113512, 131755, 141890, 156079, 178376, 184457, 210808, 222970, 263510, 283780, 289861, 312158, 368914, 445940, 527020, 567560, 579722, 624316, 737828, 780395, 891880, 922285, 1054040, 1159444, 1248632, 1449305, 1475656, 1560790, 1844570, 2029027, 2318888, 2898610, 3121580, 3689140, 4058054, 5797220, 6243160, 7378280, 8116108, 10145135, 11594440, 16232216, 20290270, 40580540, 81161080]

約数ペア:

[(1, 81161080), (2, 40580540), (4, 20290270), (5, 16232216), (7, 11594440), (8, 10145135), (10, 8116108), (11, 7378280), (13, 6243160), (14, 5797220), (20, 4058054), (22, 3689140), (26, 3121580), (28, 2898610), (35, 2318888), (40, 2029027), (44, 1844570), (52, 1560790), (55, 1475656), (56, 1449305), (65, 1248632), (70, 1159444), (77, 1054040), (88, 922285), (91, 891880), (104, 780395), (110, 737828), (130, 624316), (140, 579722), (143, 567560), (154, 527020), (182, 445940), (220, 368914), (260, 312158), (280, 289861), (286, 283780), (308, 263510), (364, 222970), (385, 210808), (440, 184457), (455, 178376), (520, 156079), (572, 141890), (616, 131755), (715, 113512), (728, 111485), (770, 105404), (910, 89188), (1001, 81080), (1144, 70945), (1430, 56756), (1540, 52702), (1820, 44594), (2002, 40540), (2027, 40040), (2860, 28378), (3080, 26351), (3640, 22297), (4004, 20270), (4054, 20020), (5005, 16216), (5720, 14189), (8008, 10135), (8108, 10010)]