81739840

素因数分解:

$2^6\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{401}}^1$

素因数の和:445

約数の個数: 168

約数和(自身を含む): 244446552

約数和(自身を除く): 162706712

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 32, 35, 40, 49, 52, 56, 64, 65, 70, 80, 91, 98, 104, 112, 130, 140, 160, 182, 196, 208, 224, 245, 260, 280, 320, 364, 392, 401, 416, 448, 455, 490, 520, 560, 637, 728, 784, 802, 832, 910, 980, 1040, 1120, 1274, 1456, 1568, 1604, 1820, 1960, 2005, 2080, 2240, 2548, 2807, 2912, 3136, 3185, 3208, 3640, 3920, 4010, 4160, 5096, 5213, 5614, 5824, 6370, 6416, 7280, 7840, 8020, 10192, 10426, 11228, 12740, 12832, 14035, 14560, 15680, 16040, 19649, 20384, 20852, 22456, 25480, 25664, 26065, 28070, 29120, 32080, 36491, 39298, 40768, 41704, 44912, 50960, 52130, 56140, 64160, 72982, 78596, 83408, 89824, 98245, 101920, 104260, 112280, 128320, 145964, 157192, 166816, 179648, 182455, 196490, 203840, 208520, 224560, 255437, 291928, 314384, 333632, 364910, 392980, 417040, 449120, 510874, 583856, 628768, 729820, 785960, 834080, 898240, 1021748, 1167712, 1257536, 1277185, 1459640, 1571920, 1668160, 2043496, 2335424, 2554370, 2919280, 3143840, 4086992, 5108740, 5838560, 6287680, 8173984, 10217480, 11677120, 16347968, 20434960, 40869920, 81739840]

約数ペア:

[(1, 81739840), (2, 40869920), (4, 20434960), (5, 16347968), (7, 11677120), (8, 10217480), (10, 8173984), (13, 6287680), (14, 5838560), (16, 5108740), (20, 4086992), (26, 3143840), (28, 2919280), (32, 2554370), (35, 2335424), (40, 2043496), (49, 1668160), (52, 1571920), (56, 1459640), (64, 1277185), (65, 1257536), (70, 1167712), (80, 1021748), (91, 898240), (98, 834080), (104, 785960), (112, 729820), (130, 628768), (140, 583856), (160, 510874), (182, 449120), (196, 417040), (208, 392980), (224, 364910), (245, 333632), (260, 314384), (280, 291928), (320, 255437), (364, 224560), (392, 208520), (401, 203840), (416, 196490), (448, 182455), (455, 179648), (490, 166816), (520, 157192), (560, 145964), (637, 128320), (728, 112280), (784, 104260), (802, 101920), (832, 98245), (910, 89824), (980, 83408), (1040, 78596), (1120, 72982), (1274, 64160), (1456, 56140), (1568, 52130), (1604, 50960), (1820, 44912), (1960, 41704), (2005, 40768), (2080, 39298), (2240, 36491), (2548, 32080), (2807, 29120), (2912, 28070), (3136, 26065), (3185, 25664), (3208, 25480), (3640, 22456), (3920, 20852), (4010, 20384), (4160, 19649), (5096, 16040), (5213, 15680), (5614, 14560), (5824, 14035), (6370, 12832), (6416, 12740), (7280, 11228), (7840, 10426), (8020, 10192)]