642157208

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{103}}^1\times {\mathrm{349}}^1$

素因数の和:505

約数の個数: 128

約数和(自身を含む): 1572480000

約数和(自身を除く): 930322792

約数列:

[1, 2, 4, 7, 8, 11, 14, 22, 28, 29, 44, 56, 58, 77, 88, 103, 116, 154, 203, 206, 232, 308, 319, 349, 406, 412, 616, 638, 698, 721, 812, 824, 1133, 1276, 1396, 1442, 1624, 2233, 2266, 2443, 2552, 2792, 2884, 2987, 3839, 4466, 4532, 4886, 5768, 5974, 7678, 7931, 8932, 9064, 9772, 10121, 11948, 15356, 15862, 17864, 19544, 20242, 20909, 23896, 26873, 30712, 31724, 32857, 35947, 40484, 41818, 53746, 63448, 65714, 70847, 71894, 80968, 83636, 107492, 111331, 131428, 141694, 143788, 167272, 214984, 222662, 229999, 251629, 262856, 283388, 287576, 395417, 445324, 459998, 503258, 566776, 779317, 790834, 890648, 919996, 1006516, 1042463, 1558634, 1581668, 1839992, 2013032, 2084926, 2767919, 3117268, 3163336, 4169852, 5535838, 6234536, 7297241, 8339704, 11071676, 11467093, 14594482, 22143352, 22934186, 29188964, 45868372, 58377928, 80269651, 91736744, 160539302, 321078604, 642157208]

約数ペア:

[(1, 642157208), (2, 321078604), (4, 160539302), (7, 91736744), (8, 80269651), (11, 58377928), (14, 45868372), (22, 29188964), (28, 22934186), (29, 22143352), (44, 14594482), (56, 11467093), (58, 11071676), (77, 8339704), (88, 7297241), (103, 6234536), (116, 5535838), (154, 4169852), (203, 3163336), (206, 3117268), (232, 2767919), (308, 2084926), (319, 2013032), (349, 1839992), (406, 1581668), (412, 1558634), (616, 1042463), (638, 1006516), (698, 919996), (721, 890648), (812, 790834), (824, 779317), (1133, 566776), (1276, 503258), (1396, 459998), (1442, 445324), (1624, 395417), (2233, 287576), (2266, 283388), (2443, 262856), (2552, 251629), (2792, 229999), (2884, 222662), (2987, 214984), (3839, 167272), (4466, 143788), (4532, 141694), (4886, 131428), (5768, 111331), (5974, 107492), (7678, 83636), (7931, 80968), (8932, 71894), (9064, 70847), (9772, 65714), (10121, 63448), (11948, 53746), (15356, 41818), (15862, 40484), (17864, 35947), (19544, 32857), (20242, 31724), (20909, 30712), (23896, 26873)]