640206432

素因数分解:

$2^5\times 3^2\times {\mathrm{71}}^1\times {\mathrm{131}}^1\times {\mathrm{239}}^1$

素因数の和:457

約数の個数: 144

約数和(自身を含む): 1868106240

約数和(自身を除く): 1227899808

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 32, 36, 48, 71, 72, 96, 131, 142, 144, 213, 239, 262, 284, 288, 393, 426, 478, 524, 568, 639, 717, 786, 852, 956, 1048, 1136, 1179, 1278, 1434, 1572, 1704, 1912, 2096, 2151, 2272, 2358, 2556, 2868, 3144, 3408, 3824, 4192, 4302, 4716, 5112, 5736, 6288, 6816, 7648, 8604, 9301, 9432, 10224, 11472, 12576, 16969, 17208, 18602, 18864, 20448, 22944, 27903, 31309, 33938, 34416, 37204, 37728, 50907, 55806, 62618, 67876, 68832, 74408, 83709, 93927, 101814, 111612, 125236, 135752, 148816, 152721, 167418, 187854, 203628, 223224, 250472, 271504, 281781, 297632, 305442, 334836, 375708, 407256, 446448, 500944, 543008, 563562, 610884, 669672, 751416, 814512, 892896, 1001888, 1127124, 1221768, 1339344, 1502832, 1629024, 2222939, 2254248, 2443536, 2678688, 3005664, 4445878, 4508496, 4887072, 6668817, 8891756, 9016992, 13337634, 17783512, 20006451, 26675268, 35567024, 40012902, 53350536, 71134048, 80025804, 106701072, 160051608, 213402144, 320103216, 640206432]

約数ペア:

[(1, 640206432), (2, 320103216), (3, 213402144), (4, 160051608), (6, 106701072), (8, 80025804), (9, 71134048), (12, 53350536), (16, 40012902), (18, 35567024), (24, 26675268), (32, 20006451), (36, 17783512), (48, 13337634), (71, 9016992), (72, 8891756), (96, 6668817), (131, 4887072), (142, 4508496), (144, 4445878), (213, 3005664), (239, 2678688), (262, 2443536), (284, 2254248), (288, 2222939), (393, 1629024), (426, 1502832), (478, 1339344), (524, 1221768), (568, 1127124), (639, 1001888), (717, 892896), (786, 814512), (852, 751416), (956, 669672), (1048, 610884), (1136, 563562), (1179, 543008), (1278, 500944), (1434, 446448), (1572, 407256), (1704, 375708), (1912, 334836), (2096, 305442), (2151, 297632), (2272, 281781), (2358, 271504), (2556, 250472), (2868, 223224), (3144, 203628), (3408, 187854), (3824, 167418), (4192, 152721), (4302, 148816), (4716, 135752), (5112, 125236), (5736, 111612), (6288, 101814), (6816, 93927), (7648, 83709), (8604, 74408), (9301, 68832), (9432, 67876), (10224, 62618), (11472, 55806), (12576, 50907), (16969, 37728), (17208, 37204), (18602, 34416), (18864, 33938), (20448, 31309), (22944, 27903)]