81227520

素因数分解:

$2^8\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{641}}^1$

素因数の和:679

約数の個数: 216

約数和(自身を含む): 307066032

約数和(自身を除く): 225838512

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 16, 18, 20, 22, 24, 30, 32, 33, 36, 40, 44, 45, 48, 55, 60, 64, 66, 72, 80, 88, 90, 96, 99, 110, 120, 128, 132, 144, 160, 165, 176, 180, 192, 198, 220, 240, 256, 264, 288, 320, 330, 352, 360, 384, 396, 440, 480, 495, 528, 576, 640, 641, 660, 704, 720, 768, 792, 880, 960, 990, 1056, 1152, 1280, 1282, 1320, 1408, 1440, 1584, 1760, 1920, 1923, 1980, 2112, 2304, 2564, 2640, 2816, 2880, 3168, 3205, 3520, 3840, 3846, 3960, 4224, 5128, 5280, 5760, 5769, 6336, 6410, 7040, 7051, 7692, 7920, 8448, 9615, 10256, 10560, 11520, 11538, 12672, 12820, 14080, 14102, 15384, 15840, 19230, 20512, 21120, 21153, 23076, 25344, 25640, 28204, 28845, 30768, 31680, 35255, 38460, 41024, 42240, 42306, 46152, 51280, 56408, 57690, 61536, 63360, 63459, 70510, 76920, 82048, 84612, 92304, 102560, 105765, 112816, 115380, 123072, 126720, 126918, 141020, 153840, 164096, 169224, 184608, 205120, 211530, 225632, 230760, 246144, 253836, 282040, 307680, 317295, 338448, 369216, 410240, 423060, 451264, 461520, 492288, 507672, 564080, 615360, 634590, 676896, 738432, 820480, 846120, 902528, 923040, 1015344, 1128160, 1230720, 1269180, 1353792, 1476864, 1692240, 1805056, 1846080, 2030688, 2256320, 2461440, 2538360, 2707584, 3384480, 3692160, 4061376, 4512640, 5076720, 5415168, 6768960, 7384320, 8122752, 9025280, 10153440, 13537920, 16245504, 20306880, 27075840, 40613760, 81227520]

約数ペア:

[(1, 81227520), (2, 40613760), (3, 27075840), (4, 20306880), (5, 16245504), (6, 13537920), (8, 10153440), (9, 9025280), (10, 8122752), (11, 7384320), (12, 6768960), (15, 5415168), (16, 5076720), (18, 4512640), (20, 4061376), (22, 3692160), (24, 3384480), (30, 2707584), (32, 2538360), (33, 2461440), (36, 2256320), (40, 2030688), (44, 1846080), (45, 1805056), (48, 1692240), (55, 1476864), (60, 1353792), (64, 1269180), (66, 1230720), (72, 1128160), (80, 1015344), (88, 923040), (90, 902528), (96, 846120), (99, 820480), (110, 738432), (120, 676896), (128, 634590), (132, 615360), (144, 564080), (160, 507672), (165, 492288), (176, 461520), (180, 451264), (192, 423060), (198, 410240), (220, 369216), (240, 338448), (256, 317295), (264, 307680), (288, 282040), (320, 253836), (330, 246144), (352, 230760), (360, 225632), (384, 211530), (396, 205120), (440, 184608), (480, 169224), (495, 164096), (528, 153840), (576, 141020), (640, 126918), (641, 126720), (660, 123072), (704, 115380), (720, 112816), (768, 105765), (792, 102560), (880, 92304), (960, 84612), (990, 82048), (1056, 76920), (1152, 70510), (1280, 63459), (1282, 63360), (1320, 61536), (1408, 57690), (1440, 56408), (1584, 51280), (1760, 46152), (1920, 42306), (1923, 42240), (1980, 41024), (2112, 38460), (2304, 35255), (2564, 31680), (2640, 30768), (2816, 28845), (2880, 28204), (3168, 25640), (3205, 25344), (3520, 23076), (3840, 21153), (3846, 21120), (3960, 20512), (4224, 19230), (5128, 15840), (5280, 15384), (5760, 14102), (5769, 14080), (6336, 12820), (6410, 12672), (7040, 11538), (7051, 11520), (7692, 10560), (7920, 10256), (8448, 9615)]