20504040

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^2$

素因数の和:96

約数の個数: 192

約数和(自身を含む): 71668800

約数和(自身を除く): 51164760

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 17, 19, 20, 23, 24, 30, 34, 38, 40, 46, 51, 57, 60, 68, 69, 76, 85, 92, 95, 102, 114, 115, 120, 136, 138, 152, 170, 184, 190, 204, 228, 230, 255, 276, 285, 323, 340, 345, 380, 391, 408, 437, 456, 460, 510, 529, 552, 570, 646, 680, 690, 760, 782, 874, 920, 969, 1020, 1058, 1140, 1173, 1292, 1311, 1380, 1564, 1587, 1615, 1748, 1938, 1955, 2040, 2116, 2185, 2280, 2346, 2584, 2622, 2645, 2760, 3128, 3174, 3230, 3496, 3876, 3910, 4232, 4370, 4692, 4845, 5244, 5290, 5865, 6348, 6460, 6555, 7429, 7752, 7820, 7935, 8740, 8993, 9384, 9690, 10051, 10488, 10580, 11730, 12696, 12920, 13110, 14858, 15640, 15870, 17480, 17986, 19380, 20102, 21160, 22287, 23460, 26220, 26979, 29716, 30153, 31740, 35972, 37145, 38760, 40204, 44574, 44965, 46920, 50255, 52440, 53958, 59432, 60306, 63480, 71944, 74290, 80408, 89148, 89930, 100510, 107916, 111435, 120612, 134895, 148580, 150765, 170867, 178296, 179860, 201020, 215832, 222870, 241224, 269790, 297160, 301530, 341734, 359720, 402040, 445740, 512601, 539580, 603060, 683468, 854335, 891480, 1025202, 1079160, 1206120, 1366936, 1708670, 2050404, 2563005, 3417340, 4100808, 5126010, 6834680, 10252020, 20504040]

約数ペア:

[(1, 20504040), (2, 10252020), (3, 6834680), (4, 5126010), (5, 4100808), (6, 3417340), (8, 2563005), (10, 2050404), (12, 1708670), (15, 1366936), (17, 1206120), (19, 1079160), (20, 1025202), (23, 891480), (24, 854335), (30, 683468), (34, 603060), (38, 539580), (40, 512601), (46, 445740), (51, 402040), (57, 359720), (60, 341734), (68, 301530), (69, 297160), (76, 269790), (85, 241224), (92, 222870), (95, 215832), (102, 201020), (114, 179860), (115, 178296), (120, 170867), (136, 150765), (138, 148580), (152, 134895), (170, 120612), (184, 111435), (190, 107916), (204, 100510), (228, 89930), (230, 89148), (255, 80408), (276, 74290), (285, 71944), (323, 63480), (340, 60306), (345, 59432), (380, 53958), (391, 52440), (408, 50255), (437, 46920), (456, 44965), (460, 44574), (510, 40204), (529, 38760), (552, 37145), (570, 35972), (646, 31740), (680, 30153), (690, 29716), (760, 26979), (782, 26220), (874, 23460), (920, 22287), (969, 21160), (1020, 20102), (1058, 19380), (1140, 17986), (1173, 17480), (1292, 15870), (1311, 15640), (1380, 14858), (1564, 13110), (1587, 12920), (1615, 12696), (1748, 11730), (1938, 10580), (1955, 10488), (2040, 10051), (2116, 9690), (2185, 9384), (2280, 8993), (2346, 8740), (2584, 7935), (2622, 7820), (2645, 7752), (2760, 7429), (3128, 6555), (3174, 6460), (3230, 6348), (3496, 5865), (3876, 5290), (3910, 5244), (4232, 4845), (4370, 4692)]