20678840

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{23}}^1$

素因数の和:86

約数の個数: 192

約数和(自身を含む): 63244800

約数和(自身を除く): 42565960

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 19, 20, 23, 26, 28, 35, 38, 40, 46, 52, 56, 65, 70, 76, 91, 92, 95, 104, 115, 130, 133, 140, 152, 161, 169, 182, 184, 190, 230, 247, 260, 266, 280, 299, 322, 338, 364, 380, 437, 455, 460, 494, 520, 532, 598, 644, 665, 676, 728, 760, 805, 845, 874, 910, 920, 988, 1064, 1183, 1196, 1235, 1288, 1330, 1352, 1495, 1610, 1690, 1729, 1748, 1820, 1976, 2093, 2185, 2366, 2392, 2470, 2660, 2990, 3059, 3211, 3220, 3380, 3458, 3496, 3640, 3887, 4186, 4370, 4732, 4940, 5320, 5681, 5915, 5980, 6118, 6422, 6440, 6760, 6916, 7774, 8372, 8645, 8740, 9464, 9880, 10465, 11362, 11830, 11960, 12236, 12844, 13832, 15295, 15548, 16055, 16744, 17290, 17480, 19435, 20930, 22477, 22724, 23660, 24472, 25688, 27209, 28405, 30590, 31096, 32110, 34580, 38870, 39767, 41860, 44954, 45448, 47320, 54418, 56810, 61180, 64220, 69160, 73853, 77740, 79534, 83720, 89908, 108836, 112385, 113620, 122360, 128440, 136045, 147706, 155480, 159068, 179816, 198835, 217672, 224770, 227240, 272090, 295412, 318136, 369265, 397670, 449540, 516971, 544180, 590824, 738530, 795340, 899080, 1033942, 1088360, 1477060, 1590680, 2067884, 2584855, 2954120, 4135768, 5169710, 10339420, 20678840]

約数ペア:

[(1, 20678840), (2, 10339420), (4, 5169710), (5, 4135768), (7, 2954120), (8, 2584855), (10, 2067884), (13, 1590680), (14, 1477060), (19, 1088360), (20, 1033942), (23, 899080), (26, 795340), (28, 738530), (35, 590824), (38, 544180), (40, 516971), (46, 449540), (52, 397670), (56, 369265), (65, 318136), (70, 295412), (76, 272090), (91, 227240), (92, 224770), (95, 217672), (104, 198835), (115, 179816), (130, 159068), (133, 155480), (140, 147706), (152, 136045), (161, 128440), (169, 122360), (182, 113620), (184, 112385), (190, 108836), (230, 89908), (247, 83720), (260, 79534), (266, 77740), (280, 73853), (299, 69160), (322, 64220), (338, 61180), (364, 56810), (380, 54418), (437, 47320), (455, 45448), (460, 44954), (494, 41860), (520, 39767), (532, 38870), (598, 34580), (644, 32110), (665, 31096), (676, 30590), (728, 28405), (760, 27209), (805, 25688), (845, 24472), (874, 23660), (910, 22724), (920, 22477), (988, 20930), (1064, 19435), (1183, 17480), (1196, 17290), (1235, 16744), (1288, 16055), (1330, 15548), (1352, 15295), (1495, 13832), (1610, 12844), (1690, 12236), (1729, 11960), (1748, 11830), (1820, 11362), (1976, 10465), (2093, 9880), (2185, 9464), (2366, 8740), (2392, 8645), (2470, 8372), (2660, 7774), (2990, 6916), (3059, 6760), (3211, 6440), (3220, 6422), (3380, 6118), (3458, 5980), (3496, 5915), (3640, 5681), (3887, 5320), (4186, 4940), (4370, 4732)]