19921440

素因数分解:

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

素因数の和:61

約数の個数: 288

約数和(自身を含む): 80438400

約数和(自身を除く): 60516960

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 11, 12, 14, 15, 16, 20, 21, 22, 24, 28, 30, 32, 33, 35, 40, 42, 44, 48, 49, 55, 56, 60, 66, 70, 77, 80, 84, 88, 96, 98, 105, 110, 112, 120, 121, 132, 140, 147, 154, 160, 165, 168, 176, 196, 210, 220, 224, 231, 240, 242, 245, 264, 280, 294, 308, 330, 336, 343, 352, 363, 385, 392, 420, 440, 462, 480, 484, 490, 528, 539, 560, 588, 605, 616, 660, 672, 686, 726, 735, 770, 784, 840, 847, 880, 924, 968, 980, 1029, 1056, 1078, 1120, 1155, 1176, 1210, 1232, 1320, 1372, 1452, 1470, 1540, 1568, 1617, 1680, 1694, 1715, 1760, 1815, 1848, 1936, 1960, 2058, 2156, 2310, 2352, 2420, 2464, 2541, 2640, 2695, 2744, 2904, 2940, 3080, 3234, 3360, 3388, 3430, 3630, 3696, 3773, 3872, 3920, 4116, 4235, 4312, 4620, 4704, 4840, 5082, 5145, 5280, 5390, 5488, 5808, 5880, 5929, 6160, 6468, 6776, 6860, 7260, 7392, 7546, 7840, 8085, 8232, 8470, 8624, 9240, 9680, 10164, 10290, 10780, 10976, 11319, 11616, 11760, 11858, 12320, 12705, 12936, 13552, 13720, 14520, 15092, 16170, 16464, 16940, 17248, 17787, 18480, 18865, 19360, 20328, 20580, 21560, 22638, 23520, 23716, 25410, 25872, 27104, 27440, 29040, 29645, 30184, 32340, 32928, 33880, 35574, 36960, 37730, 40656, 41160, 41503, 43120, 45276, 47432, 50820, 51744, 54880, 56595, 58080, 59290, 60368, 64680, 67760, 71148, 75460, 81312, 82320, 83006, 86240, 88935, 90552, 94864, 101640, 113190, 118580, 120736, 124509, 129360, 135520, 142296, 150920, 164640, 166012, 177870, 181104, 189728, 203280, 207515, 226380, 237160, 249018, 258720, 284592, 301840, 332024, 355740, 362208, 406560, 415030, 452760, 474320, 498036, 569184, 603680, 622545, 664048, 711480, 830060, 905520, 948640, 996072, 1245090, 1328096, 1422960, 1660120, 1811040, 1992144, 2490180, 2845920, 3320240, 3984288, 4980360, 6640480, 9960720, 19921440]

約数ペア:

[(1, 19921440), (2, 9960720), (3, 6640480), (4, 4980360), (5, 3984288), (6, 3320240), (7, 2845920), (8, 2490180), (10, 1992144), (11, 1811040), (12, 1660120), (14, 1422960), (15, 1328096), (16, 1245090), (20, 996072), (21, 948640), (22, 905520), (24, 830060), (28, 711480), (30, 664048), (32, 622545), (33, 603680), (35, 569184), (40, 498036), (42, 474320), (44, 452760), (48, 415030), (49, 406560), (55, 362208), (56, 355740), (60, 332024), (66, 301840), (70, 284592), (77, 258720), (80, 249018), (84, 237160), (88, 226380), (96, 207515), (98, 203280), (105, 189728), (110, 181104), (112, 177870), (120, 166012), (121, 164640), (132, 150920), (140, 142296), (147, 135520), (154, 129360), (160, 124509), (165, 120736), (168, 118580), (176, 113190), (196, 101640), (210, 94864), (220, 90552), (224, 88935), (231, 86240), (240, 83006), (242, 82320), (245, 81312), (264, 75460), (280, 71148), (294, 67760), (308, 64680), (330, 60368), (336, 59290), (343, 58080), (352, 56595), (363, 54880), (385, 51744), (392, 50820), (420, 47432), (440, 45276), (462, 43120), (480, 41503), (484, 41160), (490, 40656), (528, 37730), (539, 36960), (560, 35574), (588, 33880), (605, 32928), (616, 32340), (660, 30184), (672, 29645), (686, 29040), (726, 27440), (735, 27104), (770, 25872), (784, 25410), (840, 23716), (847, 23520), (880, 22638), (924, 21560), (968, 20580), (980, 20328), (1029, 19360), (1056, 18865), (1078, 18480), (1120, 17787), (1155, 17248), (1176, 16940), (1210, 16464), (1232, 16170), (1320, 15092), (1372, 14520), (1452, 13720), (1470, 13552), (1540, 12936), (1568, 12705), (1617, 12320), (1680, 11858), (1694, 11760), (1715, 11616), (1760, 11319), (1815, 10976), (1848, 10780), (1936, 10290), (1960, 10164), (2058, 9680), (2156, 9240), (2310, 8624), (2352, 8470), (2420, 8232), (2464, 8085), (2541, 7840), (2640, 7546), (2695, 7392), (2744, 7260), (2904, 6860), (2940, 6776), (3080, 6468), (3234, 6160), (3360, 5929), (3388, 5880), (3430, 5808), (3630, 5488), (3696, 5390), (3773, 5280), (3872, 5145), (3920, 5082), (4116, 4840), (4235, 4704), (4312, 4620)]