About the Number

129312640

129312639 ← → 129312641

2進数表記:111101101010010011110000000

漢数字表記:一億二千九百三十一万二千六百四十

素因数分解:

2 7 × 5 1 × 97 1 × 2083 1

素因数の和:2199
約数の個数: 64
約数和(自身を含む): 312474960
約数和(自身を除く): 183162320

約数列:
[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 97, 128, 160, 194, 320, 388, 485, 640, 776, 970, 1552, 1940, 2083, 3104, 3880, 4166, 6208, 7760, 8332, 10415, 12416, 15520, 16664, 20830, 31040, 33328, 41660, 62080, 66656, 83320, 133312, 166640, 202051, 266624, 333280, 404102, 666560, 808204, 1010255, 1333120, 1616408, 2020510, 3232816, 4041020, 6465632, 8082040, 12931264, 16164080, 25862528, 32328160, 64656320, 129312640]

約数ペア:
[(1, 129312640), (2, 64656320), (4, 32328160), (5, 25862528), (8, 16164080), (10, 12931264), (16, 8082040), (20, 6465632), (32, 4041020), (40, 3232816), (64, 2020510), (80, 1616408), (97, 1333120), (128, 1010255), (160, 808204), (194, 666560), (320, 404102), (388, 333280), (485, 266624), (640, 202051), (776, 166640), (970, 133312), (1552, 83320), (1940, 66656), (2083, 62080), (3104, 41660), (3880, 33328), (4166, 31040), (6208, 20830), (7760, 16664), (8332, 15520), (10415, 12416)]

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