About the Number

21145540

21145539 ← → 21145541

2進数表記:1010000101010011111000100

漢数字表記:二千百十四万五千五百四十

素因数分解:

2 2 × 5 1 × 13 1 × 167 1 × 487 1

素因数の和:676
約数の個数: 48
約数和(自身を含む): 48206592
約数和(自身を除く): 27061052

約数列:
[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 167, 260, 334, 487, 668, 835, 974, 1670, 1948, 2171, 2435, 3340, 4342, 4870, 6331, 8684, 9740, 10855, 12662, 21710, 25324, 31655, 43420, 63310, 81329, 126620, 162658, 325316, 406645, 813290, 1057277, 1626580, 2114554, 4229108, 5286385, 10572770, 21145540]

約数ペア:
[(1, 21145540), (2, 10572770), (4, 5286385), (5, 4229108), (10, 2114554), (13, 1626580), (20, 1057277), (26, 813290), (52, 406645), (65, 325316), (130, 162658), (167, 126620), (260, 81329), (334, 63310), (487, 43420), (668, 31655), (835, 25324), (974, 21710), (1670, 12662), (1948, 10855), (2171, 9740), (2435, 8684), (3340, 6331), (4342, 4870)]

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