64389920

素因数分解:

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

素因数の和:263

約数の個数: 144

約数和(自身を含む): 182020608

約数和(自身を除く): 117630688

約数列:

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

約数ペア:

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