257781120

素因数分解:

$2^7\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1$

素因数の和:185

約数の個数: 256

約数和(自身を含む): 874229760

約数和(自身を除く): 616448640

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 31, 32, 40, 48, 60, 61, 62, 64, 71, 80, 93, 96, 120, 122, 124, 128, 142, 155, 160, 183, 186, 192, 213, 240, 244, 248, 284, 305, 310, 320, 355, 366, 372, 384, 426, 465, 480, 488, 496, 568, 610, 620, 640, 710, 732, 744, 852, 915, 930, 960, 976, 992, 1065, 1136, 1220, 1240, 1420, 1464, 1488, 1704, 1830, 1860, 1891, 1920, 1952, 1984, 2130, 2201, 2272, 2440, 2480, 2840, 2928, 2976, 3408, 3660, 3720, 3782, 3904, 3968, 4260, 4331, 4402, 4544, 4880, 4960, 5673, 5680, 5856, 5952, 6603, 6816, 7320, 7440, 7564, 7808, 8520, 8662, 8804, 9088, 9455, 9760, 9920, 11005, 11346, 11360, 11712, 11904, 12993, 13206, 13632, 14640, 14880, 15128, 17040, 17324, 17608, 18910, 19520, 19840, 21655, 22010, 22692, 22720, 23424, 25986, 26412, 27264, 28365, 29280, 29760, 30256, 33015, 34080, 34648, 35216, 37820, 39040, 43310, 44020, 45384, 45440, 51972, 52824, 56730, 58560, 59520, 60512, 64965, 66030, 68160, 69296, 70432, 75640, 86620, 88040, 90768, 103944, 105648, 113460, 117120, 121024, 129930, 132060, 134261, 136320, 138592, 140864, 151280, 173240, 176080, 181536, 207888, 211296, 226920, 242048, 259860, 264120, 268522, 277184, 281728, 302560, 346480, 352160, 363072, 402783, 415776, 422592, 453840, 519720, 528240, 537044, 554368, 605120, 671305, 692960, 704320, 726144, 805566, 831552, 845184, 907680, 1039440, 1056480, 1074088, 1210240, 1342610, 1385920, 1408640, 1611132, 1663104, 1815360, 2013915, 2078880, 2112960, 2148176, 2685220, 2771840, 3222264, 3630720, 4027830, 4157760, 4225920, 4296352, 5370440, 6444528, 8055660, 8315520, 8592704, 10740880, 12889056, 16111320, 17185408, 21481760, 25778112, 32222640, 42963520, 51556224, 64445280, 85927040, 128890560, 257781120]

約数ペア:

[(1, 257781120), (2, 128890560), (3, 85927040), (4, 64445280), (5, 51556224), (6, 42963520), (8, 32222640), (10, 25778112), (12, 21481760), (15, 17185408), (16, 16111320), (20, 12889056), (24, 10740880), (30, 8592704), (31, 8315520), (32, 8055660), (40, 6444528), (48, 5370440), (60, 4296352), (61, 4225920), (62, 4157760), (64, 4027830), (71, 3630720), (80, 3222264), (93, 2771840), (96, 2685220), (120, 2148176), (122, 2112960), (124, 2078880), (128, 2013915), (142, 1815360), (155, 1663104), (160, 1611132), (183, 1408640), (186, 1385920), (192, 1342610), (213, 1210240), (240, 1074088), (244, 1056480), (248, 1039440), (284, 907680), (305, 845184), (310, 831552), (320, 805566), (355, 726144), (366, 704320), (372, 692960), (384, 671305), (426, 605120), (465, 554368), (480, 537044), (488, 528240), (496, 519720), (568, 453840), (610, 422592), (620, 415776), (640, 402783), (710, 363072), (732, 352160), (744, 346480), (852, 302560), (915, 281728), (930, 277184), (960, 268522), (976, 264120), (992, 259860), (1065, 242048), (1136, 226920), (1220, 211296), (1240, 207888), (1420, 181536), (1464, 176080), (1488, 173240), (1704, 151280), (1830, 140864), (1860, 138592), (1891, 136320), (1920, 134261), (1952, 132060), (1984, 129930), (2130, 121024), (2201, 117120), (2272, 113460), (2440, 105648), (2480, 103944), (2840, 90768), (2928, 88040), (2976, 86620), (3408, 75640), (3660, 70432), (3720, 69296), (3782, 68160), (3904, 66030), (3968, 64965), (4260, 60512), (4331, 59520), (4402, 58560), (4544, 56730), (4880, 52824), (4960, 51972), (5673, 45440), (5680, 45384), (5856, 44020), (5952, 43310), (6603, 39040), (6816, 37820), (7320, 35216), (7440, 34648), (7564, 34080), (7808, 33015), (8520, 30256), (8662, 29760), (8804, 29280), (9088, 28365), (9455, 27264), (9760, 26412), (9920, 25986), (11005, 23424), (11346, 22720), (11360, 22692), (11712, 22010), (11904, 21655), (12993, 19840), (13206, 19520), (13632, 18910), (14640, 17608), (14880, 17324), (15128, 17040)]