81631680

素因数分解:

$2^6\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{211}}^1$

素因数の和:275

約数の個数: 224

約数和(自身を含む): 289486848

約数和(自身を除く): 207855168

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 31, 32, 39, 40, 48, 52, 60, 62, 64, 65, 78, 80, 93, 96, 104, 120, 124, 130, 155, 156, 160, 186, 192, 195, 208, 211, 240, 248, 260, 310, 312, 320, 372, 390, 403, 416, 422, 465, 480, 496, 520, 620, 624, 633, 744, 780, 806, 832, 844, 930, 960, 992, 1040, 1055, 1209, 1240, 1248, 1266, 1488, 1560, 1612, 1688, 1860, 1984, 2015, 2080, 2110, 2418, 2480, 2496, 2532, 2743, 2976, 3120, 3165, 3224, 3376, 3720, 4030, 4160, 4220, 4836, 4960, 5064, 5486, 5952, 6045, 6240, 6330, 6448, 6541, 6752, 7440, 8060, 8229, 8440, 9672, 9920, 10128, 10972, 12090, 12480, 12660, 12896, 13082, 13504, 13715, 14880, 16120, 16458, 16880, 19344, 19623, 20256, 21944, 24180, 25320, 25792, 26164, 27430, 29760, 32240, 32705, 32916, 33760, 38688, 39246, 40512, 41145, 43888, 48360, 50640, 52328, 54860, 64480, 65410, 65832, 67520, 77376, 78492, 82290, 85033, 87776, 96720, 98115, 101280, 104656, 109720, 128960, 130820, 131664, 156984, 164580, 170066, 175552, 193440, 196230, 202560, 209312, 219440, 255099, 261640, 263328, 313968, 329160, 340132, 386880, 392460, 418624, 425165, 438880, 510198, 523280, 526656, 627936, 658320, 680264, 784920, 850330, 877760, 1020396, 1046560, 1255872, 1275495, 1316640, 1360528, 1569840, 1700660, 2040792, 2093120, 2550990, 2633280, 2721056, 3139680, 3401320, 4081584, 5101980, 5442112, 6279360, 6802640, 8163168, 10203960, 13605280, 16326336, 20407920, 27210560, 40815840, 81631680]

約数ペア:

[(1, 81631680), (2, 40815840), (3, 27210560), (4, 20407920), (5, 16326336), (6, 13605280), (8, 10203960), (10, 8163168), (12, 6802640), (13, 6279360), (15, 5442112), (16, 5101980), (20, 4081584), (24, 3401320), (26, 3139680), (30, 2721056), (31, 2633280), (32, 2550990), (39, 2093120), (40, 2040792), (48, 1700660), (52, 1569840), (60, 1360528), (62, 1316640), (64, 1275495), (65, 1255872), (78, 1046560), (80, 1020396), (93, 877760), (96, 850330), (104, 784920), (120, 680264), (124, 658320), (130, 627936), (155, 526656), (156, 523280), (160, 510198), (186, 438880), (192, 425165), (195, 418624), (208, 392460), (211, 386880), (240, 340132), (248, 329160), (260, 313968), (310, 263328), (312, 261640), (320, 255099), (372, 219440), (390, 209312), (403, 202560), (416, 196230), (422, 193440), (465, 175552), (480, 170066), (496, 164580), (520, 156984), (620, 131664), (624, 130820), (633, 128960), (744, 109720), (780, 104656), (806, 101280), (832, 98115), (844, 96720), (930, 87776), (960, 85033), (992, 82290), (1040, 78492), (1055, 77376), (1209, 67520), (1240, 65832), (1248, 65410), (1266, 64480), (1488, 54860), (1560, 52328), (1612, 50640), (1688, 48360), (1860, 43888), (1984, 41145), (2015, 40512), (2080, 39246), (2110, 38688), (2418, 33760), (2480, 32916), (2496, 32705), (2532, 32240), (2743, 29760), (2976, 27430), (3120, 26164), (3165, 25792), (3224, 25320), (3376, 24180), (3720, 21944), (4030, 20256), (4160, 19623), (4220, 19344), (4836, 16880), (4960, 16458), (5064, 16120), (5486, 14880), (5952, 13715), (6045, 13504), (6240, 13082), (6330, 12896), (6448, 12660), (6541, 12480), (6752, 12090), (7440, 10972), (8060, 10128), (8229, 9920), (8440, 9672)]