81558360

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{157}}^1$

素因数の和:227

約数の個数: 256

約数和(自身を含む): 302601600

約数和(自身を除く): 221043240

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 18, 20, 24, 26, 27, 30, 36, 37, 39, 40, 45, 52, 54, 60, 65, 72, 74, 78, 90, 104, 108, 111, 117, 120, 130, 135, 148, 156, 157, 180, 185, 195, 216, 222, 234, 260, 270, 296, 312, 314, 333, 351, 360, 370, 390, 444, 468, 471, 481, 520, 540, 555, 585, 628, 666, 702, 740, 780, 785, 888, 936, 942, 962, 999, 1080, 1110, 1170, 1256, 1332, 1404, 1413, 1443, 1480, 1560, 1570, 1665, 1755, 1884, 1924, 1998, 2041, 2220, 2340, 2355, 2405, 2664, 2808, 2826, 2886, 3140, 3330, 3510, 3768, 3848, 3996, 4082, 4239, 4329, 4440, 4680, 4710, 4810, 4995, 5652, 5772, 5809, 6123, 6280, 6660, 7020, 7065, 7215, 7992, 8164, 8478, 8658, 9420, 9620, 9990, 10205, 11304, 11544, 11618, 12246, 12987, 13320, 14040, 14130, 14430, 16328, 16956, 17316, 17427, 18369, 18840, 19240, 19980, 20410, 21195, 21645, 23236, 24492, 25974, 28260, 28860, 29045, 30615, 33912, 34632, 34854, 36738, 39960, 40820, 42390, 43290, 46472, 48984, 51948, 52281, 55107, 56520, 57720, 58090, 61230, 64935, 69708, 73476, 75517, 81640, 84780, 86580, 87135, 91845, 103896, 104562, 110214, 116180, 122460, 129870, 139416, 146952, 151034, 156843, 169560, 173160, 174270, 183690, 209124, 220428, 226551, 232360, 244920, 259740, 261405, 275535, 302068, 313686, 348540, 367380, 377585, 418248, 440856, 453102, 519480, 522810, 551070, 604136, 627372, 679653, 697080, 734760, 755170, 784215, 906204, 1045620, 1102140, 1132755, 1254744, 1359306, 1510340, 1568430, 1812408, 2038959, 2091240, 2204280, 2265510, 2718612, 3020680, 3136860, 3398265, 4077918, 4531020, 5437224, 6273720, 6796530, 8155836, 9062040, 10194795, 13593060, 16311672, 20389590, 27186120, 40779180, 81558360]

約数ペア:

[(1, 81558360), (2, 40779180), (3, 27186120), (4, 20389590), (5, 16311672), (6, 13593060), (8, 10194795), (9, 9062040), (10, 8155836), (12, 6796530), (13, 6273720), (15, 5437224), (18, 4531020), (20, 4077918), (24, 3398265), (26, 3136860), (27, 3020680), (30, 2718612), (36, 2265510), (37, 2204280), (39, 2091240), (40, 2038959), (45, 1812408), (52, 1568430), (54, 1510340), (60, 1359306), (65, 1254744), (72, 1132755), (74, 1102140), (78, 1045620), (90, 906204), (104, 784215), (108, 755170), (111, 734760), (117, 697080), (120, 679653), (130, 627372), (135, 604136), (148, 551070), (156, 522810), (157, 519480), (180, 453102), (185, 440856), (195, 418248), (216, 377585), (222, 367380), (234, 348540), (260, 313686), (270, 302068), (296, 275535), (312, 261405), (314, 259740), (333, 244920), (351, 232360), (360, 226551), (370, 220428), (390, 209124), (444, 183690), (468, 174270), (471, 173160), (481, 169560), (520, 156843), (540, 151034), (555, 146952), (585, 139416), (628, 129870), (666, 122460), (702, 116180), (740, 110214), (780, 104562), (785, 103896), (888, 91845), (936, 87135), (942, 86580), (962, 84780), (999, 81640), (1080, 75517), (1110, 73476), (1170, 69708), (1256, 64935), (1332, 61230), (1404, 58090), (1413, 57720), (1443, 56520), (1480, 55107), (1560, 52281), (1570, 51948), (1665, 48984), (1755, 46472), (1884, 43290), (1924, 42390), (1998, 40820), (2041, 39960), (2220, 36738), (2340, 34854), (2355, 34632), (2405, 33912), (2664, 30615), (2808, 29045), (2826, 28860), (2886, 28260), (3140, 25974), (3330, 24492), (3510, 23236), (3768, 21645), (3848, 21195), (3996, 20410), (4082, 19980), (4239, 19240), (4329, 18840), (4440, 18369), (4680, 17427), (4710, 17316), (4810, 16956), (4995, 16328), (5652, 14430), (5772, 14130), (5809, 14040), (6123, 13320), (6280, 12987), (6660, 12246), (7020, 11618), (7065, 11544), (7215, 11304), (7992, 10205), (8164, 9990), (8478, 9620), (8658, 9420)]