About the Number

872120990

872120989 ← → 872120991

2進数表記:110011111110111000001010011110

漢数字表記:八億七千二百十二万九百九十

素因数分解:

2 1 × 5 1 × 13 1 × 109 1 × 61547 1

素因数の和:61676
約数の個数: 32
約数和(自身を含む): 1706110560
約数和(自身を除く): 833989570

約数列:
[1, 2, 5, 10, 13, 26, 65, 109, 130, 218, 545, 1090, 1417, 2834, 7085, 14170, 61547, 123094, 307735, 615470, 800111, 1600222, 4000555, 6708623, 8001110, 13417246, 33543115, 67086230, 87212099, 174424198, 436060495, 872120990]

約数ペア:
[(1, 872120990), (2, 436060495), (5, 174424198), (10, 87212099), (13, 67086230), (26, 33543115), (65, 13417246), (109, 8001110), (130, 6708623), (218, 4000555), (545, 1600222), (1090, 800111), (1417, 615470), (2834, 307735), (7085, 123094), (14170, 61547)]

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