128779840

素因数分解:

$2^6\times 5^1\times 7^2\times {\mathrm{43}}^1\times {\mathrm{191}}^1$

素因数の和:265

約数の個数: 168

約数和(自身を含む): 366930432

約数和(自身を除く): 238150592

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 43, 49, 56, 64, 70, 80, 86, 98, 112, 140, 160, 172, 191, 196, 215, 224, 245, 280, 301, 320, 344, 382, 392, 430, 448, 490, 560, 602, 688, 764, 784, 860, 955, 980, 1120, 1204, 1337, 1376, 1505, 1528, 1568, 1720, 1910, 1960, 2107, 2240, 2408, 2674, 2752, 3010, 3056, 3136, 3440, 3820, 3920, 4214, 4816, 5348, 6020, 6112, 6685, 6880, 7640, 7840, 8213, 8428, 9359, 9632, 10535, 10696, 12040, 12224, 13370, 13760, 15280, 15680, 16426, 16856, 18718, 19264, 21070, 21392, 24080, 26740, 30560, 32852, 33712, 37436, 41065, 42140, 42784, 46795, 48160, 53480, 57491, 61120, 65704, 67424, 74872, 82130, 84280, 85568, 93590, 96320, 106960, 114982, 131408, 134848, 149744, 164260, 168560, 187180, 213920, 229964, 262816, 287455, 299488, 328520, 337120, 374360, 402437, 427840, 459928, 525632, 574910, 598976, 657040, 674240, 748720, 804874, 919856, 1149820, 1314080, 1497440, 1609748, 1839712, 2012185, 2299640, 2628160, 2994880, 3219496, 3679424, 4024370, 4599280, 6438992, 8048740, 9198560, 12877984, 16097480, 18397120, 25755968, 32194960, 64389920, 128779840]

約数ペア:

[(1, 128779840), (2, 64389920), (4, 32194960), (5, 25755968), (7, 18397120), (8, 16097480), (10, 12877984), (14, 9198560), (16, 8048740), (20, 6438992), (28, 4599280), (32, 4024370), (35, 3679424), (40, 3219496), (43, 2994880), (49, 2628160), (56, 2299640), (64, 2012185), (70, 1839712), (80, 1609748), (86, 1497440), (98, 1314080), (112, 1149820), (140, 919856), (160, 804874), (172, 748720), (191, 674240), (196, 657040), (215, 598976), (224, 574910), (245, 525632), (280, 459928), (301, 427840), (320, 402437), (344, 374360), (382, 337120), (392, 328520), (430, 299488), (448, 287455), (490, 262816), (560, 229964), (602, 213920), (688, 187180), (764, 168560), (784, 164260), (860, 149744), (955, 134848), (980, 131408), (1120, 114982), (1204, 106960), (1337, 96320), (1376, 93590), (1505, 85568), (1528, 84280), (1568, 82130), (1720, 74872), (1910, 67424), (1960, 65704), (2107, 61120), (2240, 57491), (2408, 53480), (2674, 48160), (2752, 46795), (3010, 42784), (3056, 42140), (3136, 41065), (3440, 37436), (3820, 33712), (3920, 32852), (4214, 30560), (4816, 26740), (5348, 24080), (6020, 21392), (6112, 21070), (6685, 19264), (6880, 18718), (7640, 16856), (7840, 16426), (8213, 15680), (8428, 15280), (9359, 13760), (9632, 13370), (10535, 12224), (10696, 12040)]