20870080

素因数分解:

$2^6\times 5^1\times 7^2\times {\mathrm{11}}^3$

素因数の和:64

約数の個数: 168

約数和(自身を含む): 63587376

約数和(自身を除く): 42717296

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 28, 32, 35, 40, 44, 49, 55, 56, 64, 70, 77, 80, 88, 98, 110, 112, 121, 140, 154, 160, 176, 196, 220, 224, 242, 245, 280, 308, 320, 352, 385, 392, 440, 448, 484, 490, 539, 560, 605, 616, 704, 770, 784, 847, 880, 968, 980, 1078, 1120, 1210, 1232, 1331, 1540, 1568, 1694, 1760, 1936, 1960, 2156, 2240, 2420, 2464, 2662, 2695, 3080, 3136, 3388, 3520, 3872, 3920, 4235, 4312, 4840, 4928, 5324, 5390, 5929, 6160, 6655, 6776, 7744, 7840, 8470, 8624, 9317, 9680, 10648, 10780, 11858, 12320, 13310, 13552, 15680, 16940, 17248, 18634, 19360, 21296, 21560, 23716, 24640, 26620, 27104, 29645, 33880, 34496, 37268, 38720, 42592, 43120, 46585, 47432, 53240, 54208, 59290, 65219, 67760, 74536, 85184, 86240, 93170, 94864, 106480, 118580, 130438, 135520, 149072, 172480, 186340, 189728, 212960, 237160, 260876, 271040, 298144, 326095, 372680, 379456, 425920, 474320, 521752, 596288, 652190, 745360, 948640, 1043504, 1304380, 1490720, 1897280, 2087008, 2608760, 2981440, 4174016, 5217520, 10435040, 20870080]

約数ペア:

[(1, 20870080), (2, 10435040), (4, 5217520), (5, 4174016), (7, 2981440), (8, 2608760), (10, 2087008), (11, 1897280), (14, 1490720), (16, 1304380), (20, 1043504), (22, 948640), (28, 745360), (32, 652190), (35, 596288), (40, 521752), (44, 474320), (49, 425920), (55, 379456), (56, 372680), (64, 326095), (70, 298144), (77, 271040), (80, 260876), (88, 237160), (98, 212960), (110, 189728), (112, 186340), (121, 172480), (140, 149072), (154, 135520), (160, 130438), (176, 118580), (196, 106480), (220, 94864), (224, 93170), (242, 86240), (245, 85184), (280, 74536), (308, 67760), (320, 65219), (352, 59290), (385, 54208), (392, 53240), (440, 47432), (448, 46585), (484, 43120), (490, 42592), (539, 38720), (560, 37268), (605, 34496), (616, 33880), (704, 29645), (770, 27104), (784, 26620), (847, 24640), (880, 23716), (968, 21560), (980, 21296), (1078, 19360), (1120, 18634), (1210, 17248), (1232, 16940), (1331, 15680), (1540, 13552), (1568, 13310), (1694, 12320), (1760, 11858), (1936, 10780), (1960, 10648), (2156, 9680), (2240, 9317), (2420, 8624), (2464, 8470), (2662, 7840), (2695, 7744), (3080, 6776), (3136, 6655), (3388, 6160), (3520, 5929), (3872, 5390), (3920, 5324), (4235, 4928), (4312, 4840)]