About the Number

138889380

138889379 ← → 138889381

2進数表記:1000010001110100100010100100

漢数字表記:一億三千八百八十八万九千三百八十

素因数分解:

2 2 × 3 1 × 5 1 × 7 1 × 330689 1

素因数の和:330708
約数の個数: 48
約数和(自身を含む): 444447360
約数和(自身を除く): 305557980

約数列:
[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 330689, 661378, 992067, 1322756, 1653445, 1984134, 2314823, 3306890, 3968268, 4629646, 4960335, 6613780, 6944469, 9259292, 9920670, 11574115, 13888938, 19841340, 23148230, 27777876, 34722345, 46296460, 69444690, 138889380]

約数ペア:
[(1, 138889380), (2, 69444690), (3, 46296460), (4, 34722345), (5, 27777876), (6, 23148230), (7, 19841340), (10, 13888938), (12, 11574115), (14, 9920670), (15, 9259292), (20, 6944469), (21, 6613780), (28, 4960335), (30, 4629646), (35, 3968268), (42, 3306890), (60, 2314823), (70, 1984134), (84, 1653445), (105, 1322756), (140, 992067), (210, 661378), (420, 330689)]

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