About the Number

1998903556

1998903555 ← → 1998903557

2進数表記:1110111001001001101100100000100

漢数字表記:十九億九千八百九十万三千五百五十六

素因数分解:

2 2 × 13 1 × 113 1 × 163 1 × 2087 1

素因数の和:2380
約数の個数: 48
約数和(自身を含む): 3825650304
約数和(自身を除く): 1826746748

約数列:
[1, 2, 4, 13, 26, 52, 113, 163, 226, 326, 452, 652, 1469, 2087, 2119, 2938, 4174, 4238, 5876, 8348, 8476, 18419, 27131, 36838, 54262, 73676, 108524, 235831, 239447, 340181, 471662, 478894, 680362, 943324, 957788, 1360724, 3065803, 4422353, 6131606, 8844706, 12263212, 17689412, 38440453, 76880906, 153761812, 499725889, 999451778, 1998903556]

約数ペア:
[(1, 1998903556), (2, 999451778), (4, 499725889), (13, 153761812), (26, 76880906), (52, 38440453), (113, 17689412), (163, 12263212), (226, 8844706), (326, 6131606), (452, 4422353), (652, 3065803), (1469, 1360724), (2087, 957788), (2119, 943324), (2938, 680362), (4174, 478894), (4238, 471662), (5876, 340181), (8348, 239447), (8476, 235831), (18419, 108524), (27131, 73676), (36838, 54262)]

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