81450180

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{127}}^1\times {\mathrm{509}}^1$

素因数の和:658

約数の個数: 144

約数和(自身を含む): 285143040

約数和(自身を除く): 203692860

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 127, 140, 180, 210, 252, 254, 315, 381, 420, 508, 509, 630, 635, 762, 889, 1018, 1143, 1260, 1270, 1524, 1527, 1778, 1905, 2036, 2286, 2540, 2545, 2667, 3054, 3556, 3563, 3810, 4445, 4572, 4581, 5090, 5334, 5715, 6108, 7126, 7620, 7635, 8001, 8890, 9162, 10180, 10668, 10689, 11430, 13335, 14252, 15270, 16002, 17780, 17815, 18324, 21378, 22860, 22905, 26670, 30540, 32004, 32067, 35630, 40005, 42756, 45810, 53340, 53445, 64134, 64643, 71260, 80010, 91620, 106890, 128268, 129286, 160020, 160335, 193929, 213780, 258572, 320670, 323215, 387858, 452501, 581787, 641340, 646430, 775716, 905002, 969645, 1163574, 1292860, 1357503, 1810004, 1939290, 2262505, 2327148, 2715006, 2908935, 3878580, 4072509, 4525010, 5430012, 5817870, 6787515, 8145018, 9050020, 11635740, 13575030, 16290036, 20362545, 27150060, 40725090, 81450180]

約数ペア:

[(1, 81450180), (2, 40725090), (3, 27150060), (4, 20362545), (5, 16290036), (6, 13575030), (7, 11635740), (9, 9050020), (10, 8145018), (12, 6787515), (14, 5817870), (15, 5430012), (18, 4525010), (20, 4072509), (21, 3878580), (28, 2908935), (30, 2715006), (35, 2327148), (36, 2262505), (42, 1939290), (45, 1810004), (60, 1357503), (63, 1292860), (70, 1163574), (84, 969645), (90, 905002), (105, 775716), (126, 646430), (127, 641340), (140, 581787), (180, 452501), (210, 387858), (252, 323215), (254, 320670), (315, 258572), (381, 213780), (420, 193929), (508, 160335), (509, 160020), (630, 129286), (635, 128268), (762, 106890), (889, 91620), (1018, 80010), (1143, 71260), (1260, 64643), (1270, 64134), (1524, 53445), (1527, 53340), (1778, 45810), (1905, 42756), (2036, 40005), (2286, 35630), (2540, 32067), (2545, 32004), (2667, 30540), (3054, 26670), (3556, 22905), (3563, 22860), (3810, 21378), (4445, 18324), (4572, 17815), (4581, 17780), (5090, 16002), (5334, 15270), (5715, 14252), (6108, 13335), (7126, 11430), (7620, 10689), (7635, 10668), (8001, 10180), (8890, 9162)]