About the Number

31321990

31321989 ← → 31321991

2進数表記:1110111011110111110000110

漢数字表記:三千百三十二万千九百九十

素因数分解:

2 1 × 5 1 × 7 1 × 17 1 × 26321 1

素因数の和:26352
約数の個数: 32
約数和(自身を含む): 68226624
約数和(自身を除く): 36904634

約数列:
[1, 2, 5, 7, 10, 14, 17, 34, 35, 70, 85, 119, 170, 238, 595, 1190, 26321, 52642, 131605, 184247, 263210, 368494, 447457, 894914, 921235, 1842470, 2237285, 3132199, 4474570, 6264398, 15660995, 31321990]

約数ペア:
[(1, 31321990), (2, 15660995), (5, 6264398), (7, 4474570), (10, 3132199), (14, 2237285), (17, 1842470), (34, 921235), (35, 894914), (70, 447457), (85, 368494), (119, 263210), (170, 184247), (238, 131605), (595, 52642), (1190, 26321)]

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