21075120

素因数分解:

$2^4\times 3^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{887}}^1$

素因数の和:920

約数の個数: 160

約数和(自身を含む): 79280640

約数和(自身を除く): 58205520

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 16, 18, 20, 22, 24, 27, 30, 33, 36, 40, 44, 45, 48, 54, 55, 60, 66, 72, 80, 88, 90, 99, 108, 110, 120, 132, 135, 144, 165, 176, 180, 198, 216, 220, 240, 264, 270, 297, 330, 360, 396, 432, 440, 495, 528, 540, 594, 660, 720, 792, 880, 887, 990, 1080, 1188, 1320, 1485, 1584, 1774, 1980, 2160, 2376, 2640, 2661, 2970, 3548, 3960, 4435, 4752, 5322, 5940, 7096, 7920, 7983, 8870, 9757, 10644, 11880, 13305, 14192, 15966, 17740, 19514, 21288, 23760, 23949, 26610, 29271, 31932, 35480, 39028, 39915, 42576, 47898, 48785, 53220, 58542, 63864, 70960, 78056, 79830, 87813, 95796, 97570, 106440, 117084, 119745, 127728, 146355, 156112, 159660, 175626, 191592, 195140, 212880, 234168, 239490, 263439, 292710, 319320, 351252, 383184, 390280, 439065, 468336, 478980, 526878, 585420, 638640, 702504, 780560, 878130, 957960, 1053756, 1170840, 1317195, 1405008, 1756260, 1915920, 2107512, 2341680, 2634390, 3512520, 4215024, 5268780, 7025040, 10537560, 21075120]

約数ペア:

[(1, 21075120), (2, 10537560), (3, 7025040), (4, 5268780), (5, 4215024), (6, 3512520), (8, 2634390), (9, 2341680), (10, 2107512), (11, 1915920), (12, 1756260), (15, 1405008), (16, 1317195), (18, 1170840), (20, 1053756), (22, 957960), (24, 878130), (27, 780560), (30, 702504), (33, 638640), (36, 585420), (40, 526878), (44, 478980), (45, 468336), (48, 439065), (54, 390280), (55, 383184), (60, 351252), (66, 319320), (72, 292710), (80, 263439), (88, 239490), (90, 234168), (99, 212880), (108, 195140), (110, 191592), (120, 175626), (132, 159660), (135, 156112), (144, 146355), (165, 127728), (176, 119745), (180, 117084), (198, 106440), (216, 97570), (220, 95796), (240, 87813), (264, 79830), (270, 78056), (297, 70960), (330, 63864), (360, 58542), (396, 53220), (432, 48785), (440, 47898), (495, 42576), (528, 39915), (540, 39028), (594, 35480), (660, 31932), (720, 29271), (792, 26610), (880, 23949), (887, 23760), (990, 21288), (1080, 19514), (1188, 17740), (1320, 15966), (1485, 14192), (1584, 13305), (1774, 11880), (1980, 10644), (2160, 9757), (2376, 8870), (2640, 7983), (2661, 7920), (2970, 7096), (3548, 5940), (3960, 5322), (4435, 4752)]