About the Number

12400640

12400639 ← → 12400641

2進数表記:101111010011100000000000

漢数字表記:千二百四十万六百四十

素因数分解:

2 11 × 5 1 × 7 1 × 173 1

素因数の和:207
約数の個数: 96
約数和(自身を含む): 34201440
約数和(自身を除く): 21800800

約数列:
[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 112, 128, 140, 160, 173, 224, 256, 280, 320, 346, 448, 512, 560, 640, 692, 865, 896, 1024, 1120, 1211, 1280, 1384, 1730, 1792, 2048, 2240, 2422, 2560, 2768, 3460, 3584, 4480, 4844, 5120, 5536, 6055, 6920, 7168, 8960, 9688, 10240, 11072, 12110, 13840, 14336, 17920, 19376, 22144, 24220, 27680, 35840, 38752, 44288, 48440, 55360, 71680, 77504, 88576, 96880, 110720, 155008, 177152, 193760, 221440, 310016, 354304, 387520, 442880, 620032, 775040, 885760, 1240064, 1550080, 1771520, 2480128, 3100160, 6200320, 12400640]

約数ペア:
[(1, 12400640), (2, 6200320), (4, 3100160), (5, 2480128), (7, 1771520), (8, 1550080), (10, 1240064), (14, 885760), (16, 775040), (20, 620032), (28, 442880), (32, 387520), (35, 354304), (40, 310016), (56, 221440), (64, 193760), (70, 177152), (80, 155008), (112, 110720), (128, 96880), (140, 88576), (160, 77504), (173, 71680), (224, 55360), (256, 48440), (280, 44288), (320, 38752), (346, 35840), (448, 27680), (512, 24220), (560, 22144), (640, 19376), (692, 17920), (865, 14336), (896, 13840), (1024, 12110), (1120, 11072), (1211, 10240), (1280, 9688), (1384, 8960), (1730, 7168), (1792, 6920), (2048, 6055), (2240, 5536), (2422, 5120), (2560, 4844), (2768, 4480), (3460, 3584)]

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