About the Number

128440940

128440939 ← → 128440941

2進数表記:111101001111101101001101100

漢数字表記:一億二千八百四十四万九百四十

素因数分解:

2 2 × 5 1 × 449 1 × 14303 1

素因数の和:14761
約数の個数: 24
約数和(自身を含む): 270345600
約数和(自身を除く): 141904660

約数列:
[1, 2, 4, 5, 10, 20, 449, 898, 1796, 2245, 4490, 8980, 14303, 28606, 57212, 71515, 143030, 286060, 6422047, 12844094, 25688188, 32110235, 64220470, 128440940]

約数ペア:
[(1, 128440940), (2, 64220470), (4, 32110235), (5, 25688188), (10, 12844094), (20, 6422047), (449, 286060), (898, 143030), (1796, 71515), (2245, 57212), (4490, 28606), (8980, 14303)]

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