256298640

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{71}}^1\times {\mathrm{89}}^1$

素因数の和:202

約数の個数: 240

約数和(自身を含む): 882264960

約数和(自身を除く): 625966320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 39, 40, 48, 52, 60, 65, 71, 78, 80, 89, 104, 120, 130, 142, 156, 169, 178, 195, 208, 213, 240, 260, 267, 284, 312, 338, 355, 356, 390, 426, 445, 507, 520, 534, 568, 624, 676, 710, 712, 780, 845, 852, 890, 923, 1014, 1040, 1065, 1068, 1136, 1157, 1335, 1352, 1420, 1424, 1560, 1690, 1704, 1780, 1846, 2028, 2130, 2136, 2314, 2535, 2670, 2704, 2769, 2840, 3120, 3380, 3408, 3471, 3560, 3692, 4056, 4260, 4272, 4615, 4628, 5070, 5340, 5538, 5680, 5785, 6319, 6760, 6942, 7120, 7384, 8112, 8520, 9230, 9256, 10140, 10680, 11076, 11570, 11999, 12638, 13520, 13845, 13884, 14768, 15041, 17040, 17355, 18460, 18512, 18957, 20280, 21360, 22152, 23140, 23998, 25276, 27690, 27768, 30082, 31595, 34710, 35997, 36920, 37914, 40560, 44304, 45123, 46280, 47996, 50552, 55380, 55536, 59995, 60164, 63190, 69420, 71994, 73840, 75205, 75828, 82147, 90246, 92560, 94785, 95992, 101104, 110760, 119990, 120328, 126380, 138840, 143988, 150410, 151656, 164294, 179985, 180492, 189570, 191984, 221520, 225615, 239980, 240656, 246441, 252760, 277680, 287976, 300820, 303312, 328588, 359970, 360984, 379140, 410735, 451230, 479960, 492882, 505520, 575952, 601640, 657176, 719940, 721968, 758280, 821470, 902460, 959920, 985764, 1067911, 1203280, 1232205, 1314352, 1439880, 1516560, 1642940, 1804920, 1971528, 2135822, 2464410, 2879760, 3203733, 3285880, 3609840, 3943056, 4271644, 4928820, 5339555, 6407466, 6571760, 8543288, 9857640, 10679110, 12814932, 16018665, 17086576, 19715280, 21358220, 25629864, 32037330, 42716440, 51259728, 64074660, 85432880, 128149320, 256298640]

約数ペア:

[(1, 256298640), (2, 128149320), (3, 85432880), (4, 64074660), (5, 51259728), (6, 42716440), (8, 32037330), (10, 25629864), (12, 21358220), (13, 19715280), (15, 17086576), (16, 16018665), (20, 12814932), (24, 10679110), (26, 9857640), (30, 8543288), (39, 6571760), (40, 6407466), (48, 5339555), (52, 4928820), (60, 4271644), (65, 3943056), (71, 3609840), (78, 3285880), (80, 3203733), (89, 2879760), (104, 2464410), (120, 2135822), (130, 1971528), (142, 1804920), (156, 1642940), (169, 1516560), (178, 1439880), (195, 1314352), (208, 1232205), (213, 1203280), (240, 1067911), (260, 985764), (267, 959920), (284, 902460), (312, 821470), (338, 758280), (355, 721968), (356, 719940), (390, 657176), (426, 601640), (445, 575952), (507, 505520), (520, 492882), (534, 479960), (568, 451230), (624, 410735), (676, 379140), (710, 360984), (712, 359970), (780, 328588), (845, 303312), (852, 300820), (890, 287976), (923, 277680), (1014, 252760), (1040, 246441), (1065, 240656), (1068, 239980), (1136, 225615), (1157, 221520), (1335, 191984), (1352, 189570), (1420, 180492), (1424, 179985), (1560, 164294), (1690, 151656), (1704, 150410), (1780, 143988), (1846, 138840), (2028, 126380), (2130, 120328), (2136, 119990), (2314, 110760), (2535, 101104), (2670, 95992), (2704, 94785), (2769, 92560), (2840, 90246), (3120, 82147), (3380, 75828), (3408, 75205), (3471, 73840), (3560, 71994), (3692, 69420), (4056, 63190), (4260, 60164), (4272, 59995), (4615, 55536), (4628, 55380), (5070, 50552), (5340, 47996), (5538, 46280), (5680, 45123), (5785, 44304), (6319, 40560), (6760, 37914), (6942, 36920), (7120, 35997), (7384, 34710), (8112, 31595), (8520, 30082), (9230, 27768), (9256, 27690), (10140, 25276), (10680, 23998), (11076, 23140), (11570, 22152), (11999, 21360), (12638, 20280), (13520, 18957), (13845, 18512), (13884, 18460), (14768, 17355), (15041, 17040)]