About the Number

128987712

128987711 ← → 128987713

2進数表記:111101100000011001001000000

漢数字表記:一億二千八百九十八万七千七百十二

素因数分解:

2 6 × 3 2 × 7 1 × 31991 1

素因数の和:32016
約数の個数: 84
約数和(自身を含む): 422550336
約数和(自身を除く): 293562624

約数列:
[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 16, 18, 21, 24, 28, 32, 36, 42, 48, 56, 63, 64, 72, 84, 96, 112, 126, 144, 168, 192, 224, 252, 288, 336, 448, 504, 576, 672, 1008, 1344, 2016, 4032, 31991, 63982, 95973, 127964, 191946, 223937, 255928, 287919, 383892, 447874, 511856, 575838, 671811, 767784, 895748, 1023712, 1151676, 1343622, 1535568, 1791496, 2015433, 2047424, 2303352, 2687244, 3071136, 3582992, 4030866, 4606704, 5374488, 6142272, 7165984, 8061732, 9213408, 10748976, 14331968, 16123464, 18426816, 21497952, 32246928, 42995904, 64493856, 128987712]

約数ペア:
[(1, 128987712), (2, 64493856), (3, 42995904), (4, 32246928), (6, 21497952), (7, 18426816), (8, 16123464), (9, 14331968), (12, 10748976), (14, 9213408), (16, 8061732), (18, 7165984), (21, 6142272), (24, 5374488), (28, 4606704), (32, 4030866), (36, 3582992), (42, 3071136), (48, 2687244), (56, 2303352), (63, 2047424), (64, 2015433), (72, 1791496), (84, 1535568), (96, 1343622), (112, 1151676), (126, 1023712), (144, 895748), (168, 767784), (192, 671811), (224, 575838), (252, 511856), (288, 447874), (336, 383892), (448, 287919), (504, 255928), (576, 223937), (672, 191946), (1008, 127964), (1344, 95973), (2016, 63982), (4032, 31991)]

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