About the Number

138978880

138978879 ← → 138978881

2進数表記:1000010010001010011001000000

漢数字表記:一億三千八百九十七万八千八百八十

素因数分解:

2 6 × 5 1 × 23 2 × 821 1

素因数の和:884
約数の個数: 84
約数和(自身を含む): 346379292
約数和(自身を除く): 207400412

約数列:
[1, 2, 4, 5, 8, 10, 16, 20, 23, 32, 40, 46, 64, 80, 92, 115, 160, 184, 230, 320, 368, 460, 529, 736, 821, 920, 1058, 1472, 1642, 1840, 2116, 2645, 3284, 3680, 4105, 4232, 5290, 6568, 7360, 8210, 8464, 10580, 13136, 16420, 16928, 18883, 21160, 26272, 32840, 33856, 37766, 42320, 52544, 65680, 75532, 84640, 94415, 131360, 151064, 169280, 188830, 262720, 302128, 377660, 434309, 604256, 755320, 868618, 1208512, 1510640, 1737236, 2171545, 3021280, 3474472, 4343090, 6042560, 6948944, 8686180, 13897888, 17372360, 27795776, 34744720, 69489440, 138978880]

約数ペア:
[(1, 138978880), (2, 69489440), (4, 34744720), (5, 27795776), (8, 17372360), (10, 13897888), (16, 8686180), (20, 6948944), (23, 6042560), (32, 4343090), (40, 3474472), (46, 3021280), (64, 2171545), (80, 1737236), (92, 1510640), (115, 1208512), (160, 868618), (184, 755320), (230, 604256), (320, 434309), (368, 377660), (460, 302128), (529, 262720), (736, 188830), (821, 169280), (920, 151064), (1058, 131360), (1472, 94415), (1642, 84640), (1840, 75532), (2116, 65680), (2645, 52544), (3284, 42320), (3680, 37766), (4105, 33856), (4232, 32840), (5290, 26272), (6568, 21160), (7360, 18883), (8210, 16928), (8464, 16420), (10580, 13136)]

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