256896720

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{211}}^1$

素因数の和:338

約数の個数: 240

約数和(自身を含む): 922708800

約数和(自身を除く): 665812080

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 19, 20, 24, 30, 36, 38, 40, 45, 48, 57, 60, 72, 76, 80, 89, 90, 95, 114, 120, 144, 152, 171, 178, 180, 190, 211, 228, 240, 267, 285, 304, 342, 356, 360, 380, 422, 445, 456, 534, 570, 633, 684, 712, 720, 760, 801, 844, 855, 890, 912, 1055, 1068, 1140, 1266, 1335, 1368, 1424, 1520, 1602, 1688, 1691, 1710, 1780, 1899, 2110, 2136, 2280, 2532, 2670, 2736, 3165, 3204, 3376, 3382, 3420, 3560, 3798, 4005, 4009, 4220, 4272, 4560, 5064, 5073, 5340, 6330, 6408, 6764, 6840, 7120, 7596, 8010, 8018, 8440, 8455, 9495, 10128, 10146, 10680, 12027, 12660, 12816, 13528, 13680, 15192, 15219, 16020, 16036, 16880, 16910, 18779, 18990, 20045, 20292, 21360, 24054, 25320, 25365, 27056, 30384, 30438, 32040, 32072, 33820, 36081, 37558, 37980, 40090, 40584, 48108, 50640, 50730, 56337, 60135, 60876, 64080, 64144, 67640, 72162, 75116, 75960, 76095, 80180, 81168, 93895, 96216, 101460, 112674, 120270, 121752, 135280, 144324, 150232, 151920, 152190, 160360, 169011, 180405, 187790, 192432, 202920, 225348, 240540, 243504, 281685, 288648, 300464, 304380, 320720, 338022, 356801, 360810, 375580, 405840, 450696, 481080, 563370, 577296, 608760, 676044, 713602, 721620, 751160, 845055, 901392, 962160, 1070403, 1126740, 1217520, 1352088, 1427204, 1443240, 1502320, 1690110, 1784005, 2140806, 2253480, 2704176, 2854408, 2886480, 3211209, 3380220, 3568010, 4281612, 4506960, 5352015, 5708816, 6422418, 6760440, 7136020, 8563224, 10704030, 12844836, 13520880, 14272040, 16056045, 17126448, 21408060, 25689672, 28544080, 32112090, 42816120, 51379344, 64224180, 85632240, 128448360, 256896720]

約数ペア:

[(1, 256896720), (2, 128448360), (3, 85632240), (4, 64224180), (5, 51379344), (6, 42816120), (8, 32112090), (9, 28544080), (10, 25689672), (12, 21408060), (15, 17126448), (16, 16056045), (18, 14272040), (19, 13520880), (20, 12844836), (24, 10704030), (30, 8563224), (36, 7136020), (38, 6760440), (40, 6422418), (45, 5708816), (48, 5352015), (57, 4506960), (60, 4281612), (72, 3568010), (76, 3380220), (80, 3211209), (89, 2886480), (90, 2854408), (95, 2704176), (114, 2253480), (120, 2140806), (144, 1784005), (152, 1690110), (171, 1502320), (178, 1443240), (180, 1427204), (190, 1352088), (211, 1217520), (228, 1126740), (240, 1070403), (267, 962160), (285, 901392), (304, 845055), (342, 751160), (356, 721620), (360, 713602), (380, 676044), (422, 608760), (445, 577296), (456, 563370), (534, 481080), (570, 450696), (633, 405840), (684, 375580), (712, 360810), (720, 356801), (760, 338022), (801, 320720), (844, 304380), (855, 300464), (890, 288648), (912, 281685), (1055, 243504), (1068, 240540), (1140, 225348), (1266, 202920), (1335, 192432), (1368, 187790), (1424, 180405), (1520, 169011), (1602, 160360), (1688, 152190), (1691, 151920), (1710, 150232), (1780, 144324), (1899, 135280), (2110, 121752), (2136, 120270), (2280, 112674), (2532, 101460), (2670, 96216), (2736, 93895), (3165, 81168), (3204, 80180), (3376, 76095), (3382, 75960), (3420, 75116), (3560, 72162), (3798, 67640), (4005, 64144), (4009, 64080), (4220, 60876), (4272, 60135), (4560, 56337), (5064, 50730), (5073, 50640), (5340, 48108), (6330, 40584), (6408, 40090), (6764, 37980), (6840, 37558), (7120, 36081), (7596, 33820), (8010, 32072), (8018, 32040), (8440, 30438), (8455, 30384), (9495, 27056), (10128, 25365), (10146, 25320), (10680, 24054), (12027, 21360), (12660, 20292), (12816, 20045), (13528, 18990), (13680, 18779), (15192, 16910), (15219, 16880), (16020, 16036)]