20306880

素因数分解:

$2^6\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{641}}^1$

素因数の和:675

約数の個数: 168

約数和(自身を含む): 76315824

約数和(自身を除く): 56008944

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, 132, 144, 160, 165, 176, 180, 192, 198, 220, 240, 264, 288, 320, 330, 352, 360, 396, 440, 480, 495, 528, 576, 641, 660, 704, 720, 792, 880, 960, 990, 1056, 1282, 1320, 1440, 1584, 1760, 1923, 1980, 2112, 2564, 2640, 2880, 3168, 3205, 3520, 3846, 3960, 5128, 5280, 5769, 6336, 6410, 7051, 7692, 7920, 9615, 10256, 10560, 11538, 12820, 14102, 15384, 15840, 19230, 20512, 21153, 23076, 25640, 28204, 28845, 30768, 31680, 35255, 38460, 41024, 42306, 46152, 51280, 56408, 57690, 61536, 63459, 70510, 76920, 84612, 92304, 102560, 105765, 112816, 115380, 123072, 126918, 141020, 153840, 169224, 184608, 205120, 211530, 225632, 230760, 253836, 282040, 307680, 317295, 338448, 369216, 423060, 451264, 461520, 507672, 564080, 615360, 634590, 676896, 846120, 923040, 1015344, 1128160, 1269180, 1353792, 1692240, 1846080, 2030688, 2256320, 2538360, 3384480, 4061376, 5076720, 6768960, 10153440, 20306880]

約数ペア:

[(1, 20306880), (2, 10153440), (3, 6768960), (4, 5076720), (5, 4061376), (6, 3384480), (8, 2538360), (9, 2256320), (10, 2030688), (11, 1846080), (12, 1692240), (15, 1353792), (16, 1269180), (18, 1128160), (20, 1015344), (22, 923040), (24, 846120), (30, 676896), (32, 634590), (33, 615360), (36, 564080), (40, 507672), (44, 461520), (45, 451264), (48, 423060), (55, 369216), (60, 338448), (64, 317295), (66, 307680), (72, 282040), (80, 253836), (88, 230760), (90, 225632), (96, 211530), (99, 205120), (110, 184608), (120, 169224), (132, 153840), (144, 141020), (160, 126918), (165, 123072), (176, 115380), (180, 112816), (192, 105765), (198, 102560), (220, 92304), (240, 84612), (264, 76920), (288, 70510), (320, 63459), (330, 61536), (352, 57690), (360, 56408), (396, 51280), (440, 46152), (480, 42306), (495, 41024), (528, 38460), (576, 35255), (641, 31680), (660, 30768), (704, 28845), (720, 28204), (792, 25640), (880, 23076), (960, 21153), (990, 20512), (1056, 19230), (1282, 15840), (1320, 15384), (1440, 14102), (1584, 12820), (1760, 11538), (1923, 10560), (1980, 10256), (2112, 9615), (2564, 7920), (2640, 7692), (2880, 7051), (3168, 6410), (3205, 6336), (3520, 5769), (3846, 5280), (3960, 5128)]