About the Number

81312330

81312329 ← → 81312331

2進数表記:100110110001011101001001010

漢数字表記:八千百三十一万二千三百三十

素因数分解:

2 1 × 3 1 × 5 1 × 11 1 × 79 1 × 3119 1

素因数の和:3219
約数の個数: 64
約数和(自身を含む): 215654400
約数和(自身を除く): 134342070

約数列:
[1, 2, 3, 5, 6, 10, 11, 15, 22, 30, 33, 55, 66, 79, 110, 158, 165, 237, 330, 395, 474, 790, 869, 1185, 1738, 2370, 2607, 3119, 4345, 5214, 6238, 8690, 9357, 13035, 15595, 18714, 26070, 31190, 34309, 46785, 68618, 93570, 102927, 171545, 205854, 246401, 343090, 492802, 514635, 739203, 1029270, 1232005, 1478406, 2464010, 2710411, 3696015, 5420822, 7392030, 8131233, 13552055, 16262466, 27104110, 40656165, 81312330]

約数ペア:
[(1, 81312330), (2, 40656165), (3, 27104110), (5, 16262466), (6, 13552055), (10, 8131233), (11, 7392030), (15, 5420822), (22, 3696015), (30, 2710411), (33, 2464010), (55, 1478406), (66, 1232005), (79, 1029270), (110, 739203), (158, 514635), (165, 492802), (237, 343090), (330, 246401), (395, 205854), (474, 171545), (790, 102927), (869, 93570), (1185, 68618), (1738, 46785), (2370, 34309), (2607, 31190), (3119, 26070), (4345, 18714), (5214, 15595), (6238, 13035), (8690, 9357)]

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