About the Number

131428785

131428784 ← → 131428786

2進数表記:111110101010111000110110001

漢数字表記:一億三千百四十二万八千七百八十五

素因数分解:

3 1 × 5 1 × 17 1 × 23 1 × 22409 1

素因数の和:22457
約数の個数: 32
約数和(自身を含む): 232346880
約数和(自身を除く): 100918095

約数列:
[1, 3, 5, 15, 17, 23, 51, 69, 85, 115, 255, 345, 391, 1173, 1955, 5865, 22409, 67227, 112045, 336135, 380953, 515407, 1142859, 1546221, 1904765, 2577035, 5714295, 7731105, 8761919, 26285757, 43809595, 131428785]

約数ペア:
[(1, 131428785), (3, 43809595), (5, 26285757), (15, 8761919), (17, 7731105), (23, 5714295), (51, 2577035), (69, 1904765), (85, 1546221), (115, 1142859), (255, 515407), (345, 380953), (391, 336135), (1173, 112045), (1955, 67227), (5865, 22409)]

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