21011760

素因数分解:

$2^4\times 3^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{379}}^1$

素因数の和:416

約数の個数: 240

約数和(自身を含む): 88208640

約数和(自身を除く): 67196880

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 14, 15, 16, 18, 20, 21, 22, 24, 28, 30, 33, 35, 36, 40, 42, 44, 45, 48, 55, 56, 60, 63, 66, 70, 72, 77, 80, 84, 88, 90, 99, 105, 110, 112, 120, 126, 132, 140, 144, 154, 165, 168, 176, 180, 198, 210, 220, 231, 240, 252, 264, 280, 308, 315, 330, 336, 360, 379, 385, 396, 420, 440, 462, 495, 504, 528, 560, 616, 630, 660, 693, 720, 758, 770, 792, 840, 880, 924, 990, 1008, 1137, 1155, 1232, 1260, 1320, 1386, 1516, 1540, 1584, 1680, 1848, 1895, 1980, 2274, 2310, 2520, 2640, 2653, 2772, 3032, 3080, 3411, 3465, 3696, 3790, 3960, 4169, 4548, 4620, 5040, 5306, 5544, 5685, 6064, 6160, 6822, 6930, 7580, 7920, 7959, 8338, 9096, 9240, 10612, 11088, 11370, 12507, 13265, 13644, 13860, 15160, 15918, 16676, 17055, 18192, 18480, 20845, 21224, 22740, 23877, 25014, 26530, 27288, 27720, 29183, 30320, 31836, 33352, 34110, 37521, 39795, 41690, 42448, 45480, 47754, 50028, 53060, 54576, 55440, 58366, 62535, 63672, 66704, 68220, 75042, 79590, 83380, 87549, 90960, 95508, 100056, 106120, 116732, 119385, 125070, 127344, 136440, 145915, 150084, 159180, 166760, 175098, 187605, 191016, 200112, 212240, 233464, 238770, 250140, 262647, 272880, 291830, 300168, 318360, 333520, 350196, 375210, 382032, 437745, 466928, 477540, 500280, 525294, 583660, 600336, 636720, 700392, 750420, 875490, 955080, 1000560, 1050588, 1167320, 1313235, 1400784, 1500840, 1750980, 1910160, 2101176, 2334640, 2626470, 3001680, 3501960, 4202352, 5252940, 7003920, 10505880, 21011760]

約数ペア:

[(1, 21011760), (2, 10505880), (3, 7003920), (4, 5252940), (5, 4202352), (6, 3501960), (7, 3001680), (8, 2626470), (9, 2334640), (10, 2101176), (11, 1910160), (12, 1750980), (14, 1500840), (15, 1400784), (16, 1313235), (18, 1167320), (20, 1050588), (21, 1000560), (22, 955080), (24, 875490), (28, 750420), (30, 700392), (33, 636720), (35, 600336), (36, 583660), (40, 525294), (42, 500280), (44, 477540), (45, 466928), (48, 437745), (55, 382032), (56, 375210), (60, 350196), (63, 333520), (66, 318360), (70, 300168), (72, 291830), (77, 272880), (80, 262647), (84, 250140), (88, 238770), (90, 233464), (99, 212240), (105, 200112), (110, 191016), (112, 187605), (120, 175098), (126, 166760), (132, 159180), (140, 150084), (144, 145915), (154, 136440), (165, 127344), (168, 125070), (176, 119385), (180, 116732), (198, 106120), (210, 100056), (220, 95508), (231, 90960), (240, 87549), (252, 83380), (264, 79590), (280, 75042), (308, 68220), (315, 66704), (330, 63672), (336, 62535), (360, 58366), (379, 55440), (385, 54576), (396, 53060), (420, 50028), (440, 47754), (462, 45480), (495, 42448), (504, 41690), (528, 39795), (560, 37521), (616, 34110), (630, 33352), (660, 31836), (693, 30320), (720, 29183), (758, 27720), (770, 27288), (792, 26530), (840, 25014), (880, 23877), (924, 22740), (990, 21224), (1008, 20845), (1137, 18480), (1155, 18192), (1232, 17055), (1260, 16676), (1320, 15918), (1386, 15160), (1516, 13860), (1540, 13644), (1584, 13265), (1680, 12507), (1848, 11370), (1895, 11088), (1980, 10612), (2274, 9240), (2310, 9096), (2520, 8338), (2640, 7959), (2653, 7920), (2772, 7580), (3032, 6930), (3080, 6822), (3411, 6160), (3465, 6064), (3696, 5685), (3790, 5544), (3960, 5306), (4169, 5040), (4548, 4620)]