81915680

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{109}}^1$

素因数の和:203

約数の個数: 192

約数和(自身を含む): 247484160

約数和(自身を除く): 165568480

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 28, 32, 35, 40, 44, 55, 56, 61, 70, 77, 80, 88, 109, 110, 112, 122, 140, 154, 160, 176, 218, 220, 224, 244, 280, 305, 308, 352, 385, 427, 436, 440, 488, 545, 560, 610, 616, 671, 763, 770, 854, 872, 880, 976, 1090, 1120, 1199, 1220, 1232, 1342, 1526, 1540, 1708, 1744, 1760, 1952, 2135, 2180, 2398, 2440, 2464, 2684, 3052, 3080, 3355, 3416, 3488, 3815, 4270, 4360, 4697, 4796, 4880, 5368, 5995, 6104, 6160, 6649, 6710, 6832, 7630, 8393, 8540, 8720, 9394, 9592, 9760, 10736, 11990, 12208, 12320, 13298, 13420, 13664, 15260, 16786, 17080, 17440, 18788, 19184, 21472, 23485, 23980, 24416, 26596, 26840, 30520, 33245, 33572, 34160, 37576, 38368, 41965, 46543, 46970, 47960, 53192, 53680, 61040, 66490, 67144, 68320, 73139, 75152, 83930, 93086, 93940, 95920, 106384, 107360, 122080, 132980, 134288, 146278, 150304, 167860, 186172, 187880, 191840, 212768, 232715, 265960, 268576, 292556, 335720, 365695, 372344, 375760, 465430, 511973, 531920, 585112, 671440, 731390, 744688, 751520, 930860, 1023946, 1063840, 1170224, 1342880, 1462780, 1489376, 1861720, 2047892, 2340448, 2559865, 2925560, 3723440, 4095784, 5119730, 5851120, 7446880, 8191568, 10239460, 11702240, 16383136, 20478920, 40957840, 81915680]

約数ペア:

[(1, 81915680), (2, 40957840), (4, 20478920), (5, 16383136), (7, 11702240), (8, 10239460), (10, 8191568), (11, 7446880), (14, 5851120), (16, 5119730), (20, 4095784), (22, 3723440), (28, 2925560), (32, 2559865), (35, 2340448), (40, 2047892), (44, 1861720), (55, 1489376), (56, 1462780), (61, 1342880), (70, 1170224), (77, 1063840), (80, 1023946), (88, 930860), (109, 751520), (110, 744688), (112, 731390), (122, 671440), (140, 585112), (154, 531920), (160, 511973), (176, 465430), (218, 375760), (220, 372344), (224, 365695), (244, 335720), (280, 292556), (305, 268576), (308, 265960), (352, 232715), (385, 212768), (427, 191840), (436, 187880), (440, 186172), (488, 167860), (545, 150304), (560, 146278), (610, 134288), (616, 132980), (671, 122080), (763, 107360), (770, 106384), (854, 95920), (872, 93940), (880, 93086), (976, 83930), (1090, 75152), (1120, 73139), (1199, 68320), (1220, 67144), (1232, 66490), (1342, 61040), (1526, 53680), (1540, 53192), (1708, 47960), (1744, 46970), (1760, 46543), (1952, 41965), (2135, 38368), (2180, 37576), (2398, 34160), (2440, 33572), (2464, 33245), (2684, 30520), (3052, 26840), (3080, 26596), (3355, 24416), (3416, 23980), (3488, 23485), (3815, 21472), (4270, 19184), (4360, 18788), (4697, 17440), (4796, 17080), (4880, 16786), (5368, 15260), (5995, 13664), (6104, 13420), (6160, 13298), (6649, 12320), (6710, 12208), (6832, 11990), (7630, 10736), (8393, 9760), (8540, 9592), (8720, 9394)]