About the Number

129723440

129723439 ← → 129723441

2進数表記:111101110110110110000110000

漢数字表記:一億二千九百七十二万三千四百四十

素因数分解:

2 4 × 5 1 × 7 1 × 11 1 × 21059 1

素因数の和:21090
約数の個数: 80
約数和(自身を含む): 376047360
約数和(自身を除く): 246323920

約数列:
[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 28, 35, 40, 44, 55, 56, 70, 77, 80, 88, 110, 112, 140, 154, 176, 220, 280, 308, 385, 440, 560, 616, 770, 880, 1232, 1540, 3080, 6160, 21059, 42118, 84236, 105295, 147413, 168472, 210590, 231649, 294826, 336944, 421180, 463298, 589652, 737065, 842360, 926596, 1158245, 1179304, 1474130, 1621543, 1684720, 1853192, 2316490, 2358608, 2948260, 3243086, 3706384, 4632980, 5896520, 6486172, 8107715, 9265960, 11793040, 12972344, 16215430, 18531920, 25944688, 32430860, 64861720, 129723440]

約数ペア:
[(1, 129723440), (2, 64861720), (4, 32430860), (5, 25944688), (7, 18531920), (8, 16215430), (10, 12972344), (11, 11793040), (14, 9265960), (16, 8107715), (20, 6486172), (22, 5896520), (28, 4632980), (35, 3706384), (40, 3243086), (44, 2948260), (55, 2358608), (56, 2316490), (70, 1853192), (77, 1684720), (80, 1621543), (88, 1474130), (110, 1179304), (112, 1158245), (140, 926596), (154, 842360), (176, 737065), (220, 589652), (280, 463298), (308, 421180), (385, 336944), (440, 294826), (560, 231649), (616, 210590), (770, 168472), (880, 147413), (1232, 105295), (1540, 84236), (3080, 42118), (6160, 21059)]

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