About the Number

9720980

9720979 ← → 9720981

2進数表記:100101000101010010010100

漢数字表記:九百七十二万九百八十

素因数分解:

2 2 × 5 1 × 31 1 × 15679 1

素因数の和:15719
約数の個数: 24
約数和(自身を含む): 21073920
約数和(自身を除く): 11352940

約数列:
[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 15679, 31358, 62716, 78395, 156790, 313580, 486049, 972098, 1944196, 2430245, 4860490, 9720980]

約数ペア:
[(1, 9720980), (2, 4860490), (4, 2430245), (5, 1944196), (10, 972098), (20, 486049), (31, 313580), (62, 156790), (124, 78395), (155, 62716), (310, 31358), (620, 15679)]

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