About the Number

19988021209

19988021208 ← → 19988021210

2進数表記:10010100111011000001111111111011001

漢数字表記:百九十九億八千八百二万千二百九

素因数分解:

13 1 × 47 1 × 157 1 × 208367 1

素因数の和:208584
約数の個数: 16
約数和(自身を含む): 22123680768
約数和(自身を除く): 2135659559

約数列:
[1, 13, 47, 157, 611, 2041, 7379, 95927, 208367, 2708771, 9793249, 32713619, 127312237, 425277047, 1537540093, 19988021209]

約数ペア:
[(1, 19988021209), (13, 1537540093), (47, 425277047), (157, 127312237), (611, 32713619), (2041, 9793249), (7379, 2708771), (95927, 208367)]

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