128007880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{139}}^1$

素因数の和:204

約数の個数: 256

約数和(自身を含む): 406425600

約数和(自身を除く): 278417720

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 13, 14, 20, 22, 23, 26, 28, 35, 40, 44, 46, 52, 55, 56, 65, 70, 77, 88, 91, 92, 104, 110, 115, 130, 139, 140, 143, 154, 161, 182, 184, 220, 230, 253, 260, 278, 280, 286, 299, 308, 322, 364, 385, 440, 455, 460, 506, 520, 556, 572, 598, 616, 644, 695, 715, 728, 770, 805, 910, 920, 973, 1001, 1012, 1112, 1144, 1196, 1265, 1288, 1390, 1430, 1495, 1529, 1540, 1610, 1771, 1807, 1820, 1946, 2002, 2024, 2093, 2392, 2530, 2780, 2860, 2990, 3058, 3080, 3197, 3220, 3289, 3542, 3614, 3640, 3892, 4004, 4186, 4865, 5005, 5060, 5560, 5720, 5980, 6116, 6394, 6440, 6578, 7084, 7228, 7645, 7784, 8008, 8372, 8855, 9035, 9730, 10010, 10120, 10465, 10703, 11960, 12232, 12649, 12788, 13156, 14168, 14456, 15290, 15985, 16445, 16744, 17710, 18070, 19460, 19877, 20020, 20930, 21406, 22379, 23023, 25298, 25576, 26312, 30580, 31970, 32890, 35167, 35420, 36140, 38920, 39754, 40040, 41561, 41860, 42812, 44758, 46046, 50596, 53515, 61160, 63245, 63940, 65780, 70334, 70840, 72280, 79508, 83122, 83720, 85624, 89516, 92092, 99385, 101192, 107030, 111895, 115115, 126490, 127880, 131560, 139139, 140668, 159016, 166244, 175835, 179032, 184184, 198770, 207805, 214060, 223790, 230230, 246169, 252980, 278278, 281336, 290927, 332488, 351670, 397540, 415610, 428120, 447580, 457171, 460460, 492338, 505960, 556556, 581854, 695695, 703340, 795080, 831220, 895160, 914342, 920920, 984676, 1113112, 1163708, 1230845, 1391390, 1406680, 1454635, 1662440, 1828684, 1969352, 2285855, 2327416, 2461690, 2782780, 2909270, 3200197, 3657368, 4571710, 4923380, 5565560, 5818540, 6400394, 9143420, 9846760, 11637080, 12800788, 16000985, 18286840, 25601576, 32001970, 64003940, 128007880]

約数ペア:

[(1, 128007880), (2, 64003940), (4, 32001970), (5, 25601576), (7, 18286840), (8, 16000985), (10, 12800788), (11, 11637080), (13, 9846760), (14, 9143420), (20, 6400394), (22, 5818540), (23, 5565560), (26, 4923380), (28, 4571710), (35, 3657368), (40, 3200197), (44, 2909270), (46, 2782780), (52, 2461690), (55, 2327416), (56, 2285855), (65, 1969352), (70, 1828684), (77, 1662440), (88, 1454635), (91, 1406680), (92, 1391390), (104, 1230845), (110, 1163708), (115, 1113112), (130, 984676), (139, 920920), (140, 914342), (143, 895160), (154, 831220), (161, 795080), (182, 703340), (184, 695695), (220, 581854), (230, 556556), (253, 505960), (260, 492338), (278, 460460), (280, 457171), (286, 447580), (299, 428120), (308, 415610), (322, 397540), (364, 351670), (385, 332488), (440, 290927), (455, 281336), (460, 278278), (506, 252980), (520, 246169), (556, 230230), (572, 223790), (598, 214060), (616, 207805), (644, 198770), (695, 184184), (715, 179032), (728, 175835), (770, 166244), (805, 159016), (910, 140668), (920, 139139), (973, 131560), (1001, 127880), (1012, 126490), (1112, 115115), (1144, 111895), (1196, 107030), (1265, 101192), (1288, 99385), (1390, 92092), (1430, 89516), (1495, 85624), (1529, 83720), (1540, 83122), (1610, 79508), (1771, 72280), (1807, 70840), (1820, 70334), (1946, 65780), (2002, 63940), (2024, 63245), (2093, 61160), (2392, 53515), (2530, 50596), (2780, 46046), (2860, 44758), (2990, 42812), (3058, 41860), (3080, 41561), (3197, 40040), (3220, 39754), (3289, 38920), (3542, 36140), (3614, 35420), (3640, 35167), (3892, 32890), (4004, 31970), (4186, 30580), (4865, 26312), (5005, 25576), (5060, 25298), (5560, 23023), (5720, 22379), (5980, 21406), (6116, 20930), (6394, 20020), (6440, 19877), (6578, 19460), (7084, 18070), (7228, 17710), (7645, 16744), (7784, 16445), (8008, 15985), (8372, 15290), (8855, 14456), (9035, 14168), (9730, 13156), (10010, 12788), (10120, 12649), (10465, 12232), (10703, 11960)]