20463520

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{151}}^1$

素因数の和:195

約数の個数: 144

約数和(自身を含む): 61133184

約数和(自身を除く): 40669664

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 28, 32, 35, 40, 44, 55, 56, 70, 77, 80, 88, 110, 112, 121, 140, 151, 154, 160, 176, 220, 224, 242, 280, 302, 308, 352, 385, 440, 484, 560, 604, 605, 616, 755, 770, 847, 880, 968, 1057, 1120, 1208, 1210, 1232, 1510, 1540, 1661, 1694, 1760, 1936, 2114, 2416, 2420, 2464, 3020, 3080, 3322, 3388, 3872, 4228, 4235, 4832, 4840, 5285, 6040, 6160, 6644, 6776, 8305, 8456, 8470, 9680, 10570, 11627, 12080, 12320, 13288, 13552, 16610, 16912, 16940, 18271, 19360, 21140, 23254, 24160, 26576, 27104, 33220, 33824, 33880, 36542, 42280, 46508, 53152, 58135, 66440, 67760, 73084, 84560, 91355, 93016, 116270, 127897, 132880, 135520, 146168, 169120, 182710, 186032, 232540, 255794, 265760, 292336, 365420, 372064, 465080, 511588, 584672, 639485, 730840, 930160, 1023176, 1278970, 1461680, 1860320, 2046352, 2557940, 2923360, 4092704, 5115880, 10231760, 20463520]

約数ペア:

[(1, 20463520), (2, 10231760), (4, 5115880), (5, 4092704), (7, 2923360), (8, 2557940), (10, 2046352), (11, 1860320), (14, 1461680), (16, 1278970), (20, 1023176), (22, 930160), (28, 730840), (32, 639485), (35, 584672), (40, 511588), (44, 465080), (55, 372064), (56, 365420), (70, 292336), (77, 265760), (80, 255794), (88, 232540), (110, 186032), (112, 182710), (121, 169120), (140, 146168), (151, 135520), (154, 132880), (160, 127897), (176, 116270), (220, 93016), (224, 91355), (242, 84560), (280, 73084), (302, 67760), (308, 66440), (352, 58135), (385, 53152), (440, 46508), (484, 42280), (560, 36542), (604, 33880), (605, 33824), (616, 33220), (755, 27104), (770, 26576), (847, 24160), (880, 23254), (968, 21140), (1057, 19360), (1120, 18271), (1208, 16940), (1210, 16912), (1232, 16610), (1510, 13552), (1540, 13288), (1661, 12320), (1694, 12080), (1760, 11627), (1936, 10570), (2114, 9680), (2416, 8470), (2420, 8456), (2464, 8305), (3020, 6776), (3080, 6644), (3322, 6160), (3388, 6040), (3872, 5285), (4228, 4840), (4235, 4832)]