About the Number

138972890

138972889 ← → 138972891

2進数表記:1000010010001000111011011010

漢数字表記:一億三千八百九十七万二千八百九十

素因数分解:

2 1 × 5 1 × 7 1 × 47 1 × 53 1 × 797 1

素因数の和:911
約数の個数: 64
約数和(自身を含む): 297851904
約数和(自身を除く): 158879014

約数列:
[1, 2, 5, 7, 10, 14, 35, 47, 53, 70, 94, 106, 235, 265, 329, 371, 470, 530, 658, 742, 797, 1594, 1645, 1855, 2491, 3290, 3710, 3985, 4982, 5579, 7970, 11158, 12455, 17437, 24910, 27895, 34874, 37459, 42241, 55790, 74918, 84482, 87185, 174370, 187295, 211205, 262213, 295687, 374590, 422410, 524426, 591374, 1311065, 1478435, 1985327, 2622130, 2956870, 3970654, 9926635, 13897289, 19853270, 27794578, 69486445, 138972890]

約数ペア:
[(1, 138972890), (2, 69486445), (5, 27794578), (7, 19853270), (10, 13897289), (14, 9926635), (35, 3970654), (47, 2956870), (53, 2622130), (70, 1985327), (94, 1478435), (106, 1311065), (235, 591374), (265, 524426), (329, 422410), (371, 374590), (470, 295687), (530, 262213), (658, 211205), (742, 187295), (797, 174370), (1594, 87185), (1645, 84482), (1855, 74918), (2491, 55790), (3290, 42241), (3710, 37459), (3985, 34874), (4982, 27895), (5579, 24910), (7970, 17437), (11158, 12455)]

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