20161993808

素因数分解:

$2^4\times {\mathrm{11}}^2\times {\mathrm{73}}^1\times {\mathrm{331}}^1\times {\mathrm{431}}^1$

素因数の和:865

約数の個数: 120

約数和(自身を含む): 43758949248

約数和(自身を除く): 23596955440

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 73, 88, 121, 146, 176, 242, 292, 331, 431, 484, 584, 662, 803, 862, 968, 1168, 1324, 1606, 1724, 1936, 2648, 3212, 3448, 3641, 4741, 5296, 6424, 6896, 7282, 8833, 9482, 12848, 14564, 17666, 18964, 24163, 29128, 31463, 35332, 37928, 40051, 48326, 52151, 58256, 62926, 70664, 75856, 80102, 96652, 104302, 125852, 141328, 142661, 160204, 193304, 208604, 251704, 265793, 285322, 320408, 346093, 386608, 417208, 503408, 531586, 570644, 640816, 692186, 834416, 1063172, 1141288, 1384372, 1569271, 2126344, 2282576, 2768744, 2923723, 3138542, 3807023, 4252688, 5537488, 5847446, 6277084, 7614046, 10414253, 11694892, 12554168, 15228092, 17261981, 20828506, 23389784, 25108336, 30456184, 34523962, 41657012, 46779568, 60912368, 69047924, 83314024, 114556783, 138095848, 166628048, 229113566, 276191696, 458227132, 916454264, 1260124613, 1832908528, 2520249226, 5040498452, 10080996904, 20161993808]

約数ペア:

[(1, 20161993808), (2, 10080996904), (4, 5040498452), (8, 2520249226), (11, 1832908528), (16, 1260124613), (22, 916454264), (44, 458227132), (73, 276191696), (88, 229113566), (121, 166628048), (146, 138095848), (176, 114556783), (242, 83314024), (292, 69047924), (331, 60912368), (431, 46779568), (484, 41657012), (584, 34523962), (662, 30456184), (803, 25108336), (862, 23389784), (968, 20828506), (1168, 17261981), (1324, 15228092), (1606, 12554168), (1724, 11694892), (1936, 10414253), (2648, 7614046), (3212, 6277084), (3448, 5847446), (3641, 5537488), (4741, 4252688), (5296, 3807023), (6424, 3138542), (6896, 2923723), (7282, 2768744), (8833, 2282576), (9482, 2126344), (12848, 1569271), (14564, 1384372), (17666, 1141288), (18964, 1063172), (24163, 834416), (29128, 692186), (31463, 640816), (35332, 570644), (37928, 531586), (40051, 503408), (48326, 417208), (52151, 386608), (58256, 346093), (62926, 320408), (70664, 285322), (75856, 265793), (80102, 251704), (96652, 208604), (104302, 193304), (125852, 160204), (141328, 142661)]