21818720

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{11}}^2\times {\mathrm{23}}^1$

素因数の和:74

約数の個数: 216

約数和(自身を含む): 68774832

約数和(自身を除く): 46956112

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 23, 28, 32, 35, 40, 44, 46, 49, 55, 56, 70, 77, 80, 88, 92, 98, 110, 112, 115, 121, 140, 154, 160, 161, 176, 184, 196, 220, 224, 230, 242, 245, 253, 280, 308, 322, 352, 368, 385, 392, 440, 460, 484, 490, 506, 539, 560, 605, 616, 644, 736, 770, 784, 805, 847, 880, 920, 968, 980, 1012, 1078, 1120, 1127, 1210, 1232, 1265, 1288, 1540, 1568, 1610, 1694, 1760, 1771, 1840, 1936, 1960, 2024, 2156, 2254, 2420, 2464, 2530, 2576, 2695, 2783, 3080, 3220, 3388, 3542, 3680, 3872, 3920, 4048, 4235, 4312, 4508, 4840, 5060, 5152, 5390, 5566, 5635, 5929, 6160, 6440, 6776, 7084, 7840, 8096, 8470, 8624, 8855, 9016, 9680, 10120, 10780, 11132, 11270, 11858, 12320, 12397, 12880, 13552, 13915, 14168, 16940, 17248, 17710, 18032, 19360, 19481, 20240, 21560, 22264, 22540, 23716, 24794, 25760, 27104, 27830, 28336, 29645, 33880, 35420, 36064, 38962, 40480, 43120, 44528, 45080, 47432, 49588, 55660, 56672, 59290, 61985, 67760, 70840, 77924, 86240, 89056, 90160, 94864, 97405, 99176, 111320, 118580, 123970, 135520, 136367, 141680, 155848, 180320, 189728, 194810, 198352, 222640, 237160, 247940, 272734, 283360, 311696, 389620, 396704, 445280, 474320, 495880, 545468, 623392, 681835, 779240, 948640, 991760, 1090936, 1363670, 1558480, 1983520, 2181872, 2727340, 3116960, 4363744, 5454680, 10909360, 21818720]

約数ペア:

[(1, 21818720), (2, 10909360), (4, 5454680), (5, 4363744), (7, 3116960), (8, 2727340), (10, 2181872), (11, 1983520), (14, 1558480), (16, 1363670), (20, 1090936), (22, 991760), (23, 948640), (28, 779240), (32, 681835), (35, 623392), (40, 545468), (44, 495880), (46, 474320), (49, 445280), (55, 396704), (56, 389620), (70, 311696), (77, 283360), (80, 272734), (88, 247940), (92, 237160), (98, 222640), (110, 198352), (112, 194810), (115, 189728), (121, 180320), (140, 155848), (154, 141680), (160, 136367), (161, 135520), (176, 123970), (184, 118580), (196, 111320), (220, 99176), (224, 97405), (230, 94864), (242, 90160), (245, 89056), (253, 86240), (280, 77924), (308, 70840), (322, 67760), (352, 61985), (368, 59290), (385, 56672), (392, 55660), (440, 49588), (460, 47432), (484, 45080), (490, 44528), (506, 43120), (539, 40480), (560, 38962), (605, 36064), (616, 35420), (644, 33880), (736, 29645), (770, 28336), (784, 27830), (805, 27104), (847, 25760), (880, 24794), (920, 23716), (968, 22540), (980, 22264), (1012, 21560), (1078, 20240), (1120, 19481), (1127, 19360), (1210, 18032), (1232, 17710), (1265, 17248), (1288, 16940), (1540, 14168), (1568, 13915), (1610, 13552), (1694, 12880), (1760, 12397), (1771, 12320), (1840, 11858), (1936, 11270), (1960, 11132), (2024, 10780), (2156, 10120), (2254, 9680), (2420, 9016), (2464, 8855), (2530, 8624), (2576, 8470), (2695, 8096), (2783, 7840), (3080, 7084), (3220, 6776), (3388, 6440), (3542, 6160), (3680, 5929), (3872, 5635), (3920, 5566), (4048, 5390), (4235, 5152), (4312, 5060), (4508, 4840)]