18920720

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{113}}^1$

素因数の和:169

約数の個数: 160

約数和(自身を含む): 56996352

約数和(自身を除く): 38075632

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 23, 26, 28, 35, 40, 46, 52, 56, 65, 70, 80, 91, 92, 104, 112, 113, 115, 130, 140, 161, 182, 184, 208, 226, 230, 260, 280, 299, 322, 364, 368, 452, 455, 460, 520, 560, 565, 598, 644, 728, 791, 805, 904, 910, 920, 1040, 1130, 1196, 1288, 1456, 1469, 1495, 1582, 1610, 1808, 1820, 1840, 2093, 2260, 2392, 2576, 2599, 2938, 2990, 3164, 3220, 3640, 3955, 4186, 4520, 4784, 5198, 5876, 5980, 6328, 6440, 7280, 7345, 7910, 8372, 9040, 10283, 10396, 10465, 11752, 11960, 12656, 12880, 12995, 14690, 15820, 16744, 18193, 20566, 20792, 20930, 23504, 23920, 25990, 29380, 31640, 33488, 33787, 36386, 41132, 41584, 41860, 51415, 51980, 58760, 63280, 67574, 72772, 82264, 83720, 90965, 102830, 103960, 117520, 135148, 145544, 164528, 167440, 168935, 181930, 205660, 207920, 236509, 270296, 291088, 337870, 363860, 411320, 473018, 540592, 675740, 727720, 822640, 946036, 1182545, 1351480, 1455440, 1892072, 2365090, 2702960, 3784144, 4730180, 9460360, 18920720]

約数ペア:

[(1, 18920720), (2, 9460360), (4, 4730180), (5, 3784144), (7, 2702960), (8, 2365090), (10, 1892072), (13, 1455440), (14, 1351480), (16, 1182545), (20, 946036), (23, 822640), (26, 727720), (28, 675740), (35, 540592), (40, 473018), (46, 411320), (52, 363860), (56, 337870), (65, 291088), (70, 270296), (80, 236509), (91, 207920), (92, 205660), (104, 181930), (112, 168935), (113, 167440), (115, 164528), (130, 145544), (140, 135148), (161, 117520), (182, 103960), (184, 102830), (208, 90965), (226, 83720), (230, 82264), (260, 72772), (280, 67574), (299, 63280), (322, 58760), (364, 51980), (368, 51415), (452, 41860), (455, 41584), (460, 41132), (520, 36386), (560, 33787), (565, 33488), (598, 31640), (644, 29380), (728, 25990), (791, 23920), (805, 23504), (904, 20930), (910, 20792), (920, 20566), (1040, 18193), (1130, 16744), (1196, 15820), (1288, 14690), (1456, 12995), (1469, 12880), (1495, 12656), (1582, 11960), (1610, 11752), (1808, 10465), (1820, 10396), (1840, 10283), (2093, 9040), (2260, 8372), (2392, 7910), (2576, 7345), (2599, 7280), (2938, 6440), (2990, 6328), (3164, 5980), (3220, 5876), (3640, 5198), (3955, 4784), (4186, 4520)]