About the Number

81202740

81202739 ← → 81202741

2進数表記:100110101110000111000110100

漢数字表記:八千百二十万二千七百四十

素因数分解:

2 2 × 3 1 × 5 1 × 173 1 × 7823 1

素因数の和:8008
約数の個数: 48
約数和(自身を含む): 228711168
約数和(自身を除く): 147508428

約数列:
[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 173, 346, 519, 692, 865, 1038, 1730, 2076, 2595, 3460, 5190, 7823, 10380, 15646, 23469, 31292, 39115, 46938, 78230, 93876, 117345, 156460, 234690, 469380, 1353379, 2706758, 4060137, 5413516, 6766895, 8120274, 13533790, 16240548, 20300685, 27067580, 40601370, 81202740]

約数ペア:
[(1, 81202740), (2, 40601370), (3, 27067580), (4, 20300685), (5, 16240548), (6, 13533790), (10, 8120274), (12, 6766895), (15, 5413516), (20, 4060137), (30, 2706758), (60, 1353379), (173, 469380), (346, 234690), (519, 156460), (692, 117345), (865, 93876), (1038, 78230), (1730, 46938), (2076, 39115), (2595, 31292), (3460, 23469), (5190, 15646), (7823, 10380)]

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