640204968

素因数分解:

$2^3\times 3^1\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{127}}^1\times {\mathrm{151}}^1$

素因数の和:407

約数の個数: 128

約数和(自身を含む): 1765048320

約数和(自身を除く): 1124843352

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 24, 26, 39, 52, 78, 104, 107, 127, 151, 156, 214, 254, 302, 312, 321, 381, 428, 453, 508, 604, 642, 762, 856, 906, 1016, 1208, 1284, 1391, 1524, 1651, 1812, 1963, 2568, 2782, 3048, 3302, 3624, 3926, 4173, 4953, 5564, 5889, 6604, 7852, 8346, 9906, 11128, 11778, 13208, 13589, 15704, 16157, 16692, 19177, 19812, 23556, 27178, 32314, 33384, 38354, 39624, 40767, 47112, 48471, 54356, 57531, 64628, 76708, 81534, 96942, 108712, 115062, 129256, 153416, 163068, 176657, 193884, 210041, 230124, 249301, 326136, 353314, 387768, 420082, 460248, 498602, 529971, 630123, 706628, 747903, 840164, 997204, 1059942, 1260246, 1413256, 1495806, 1680328, 1994408, 2051939, 2119884, 2520492, 2991612, 4103878, 4239768, 5040984, 5983224, 6155817, 8207756, 12311634, 16415512, 24623268, 26675207, 49246536, 53350414, 80025621, 106700828, 160051242, 213401656, 320102484, 640204968]

約数ペア:

[(1, 640204968), (2, 320102484), (3, 213401656), (4, 160051242), (6, 106700828), (8, 80025621), (12, 53350414), (13, 49246536), (24, 26675207), (26, 24623268), (39, 16415512), (52, 12311634), (78, 8207756), (104, 6155817), (107, 5983224), (127, 5040984), (151, 4239768), (156, 4103878), (214, 2991612), (254, 2520492), (302, 2119884), (312, 2051939), (321, 1994408), (381, 1680328), (428, 1495806), (453, 1413256), (508, 1260246), (604, 1059942), (642, 997204), (762, 840164), (856, 747903), (906, 706628), (1016, 630123), (1208, 529971), (1284, 498602), (1391, 460248), (1524, 420082), (1651, 387768), (1812, 353314), (1963, 326136), (2568, 249301), (2782, 230124), (3048, 210041), (3302, 193884), (3624, 176657), (3926, 163068), (4173, 153416), (4953, 129256), (5564, 115062), (5889, 108712), (6604, 96942), (7852, 81534), (8346, 76708), (9906, 64628), (11128, 57531), (11778, 54356), (13208, 48471), (13589, 47112), (15704, 40767), (16157, 39624), (16692, 38354), (19177, 33384), (19812, 32314), (23556, 27178)]