About the Number

301990

301989 ← → 301991

2進数表記:1001001101110100110

漢数字表記:三十万千九百九十

素因数分解:

2 1 × 5 1 × 13 1 × 23 1 × 101 1

素因数の和:144
約数の個数: 32
約数和(自身を含む): 616896
約数和(自身を除く): 314906

約数列:
[1, 2, 5, 10, 13, 23, 26, 46, 65, 101, 115, 130, 202, 230, 299, 505, 598, 1010, 1313, 1495, 2323, 2626, 2990, 4646, 6565, 11615, 13130, 23230, 30199, 60398, 150995, 301990]

約数ペア:
[(1, 301990), (2, 150995), (5, 60398), (10, 30199), (13, 23230), (23, 13130), (26, 11615), (46, 6565), (65, 4646), (101, 2990), (115, 2626), (130, 2323), (202, 1495), (230, 1313), (299, 1010), (505, 598)]

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