About the Number

81181230

81181229 ← → 81181231

2進数表記:100110101101011101000101110

漢数字表記:八千百十八万千二百三十

素因数分解:

2 1 × 3 1 × 5 1 × 13 1 × 41 1 × 5077 1

素因数の和:5141
約数の個数: 64
約数和(自身を含む): 214982208
約数和(自身を除く): 133800978

約数列:
[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 41, 65, 78, 82, 123, 130, 195, 205, 246, 390, 410, 533, 615, 1066, 1230, 1599, 2665, 3198, 5077, 5330, 7995, 10154, 15231, 15990, 25385, 30462, 50770, 66001, 76155, 132002, 152310, 198003, 208157, 330005, 396006, 416314, 624471, 660010, 990015, 1040785, 1248942, 1980030, 2081570, 2706041, 3122355, 5412082, 6244710, 8118123, 13530205, 16236246, 27060410, 40590615, 81181230]

約数ペア:
[(1, 81181230), (2, 40590615), (3, 27060410), (5, 16236246), (6, 13530205), (10, 8118123), (13, 6244710), (15, 5412082), (26, 3122355), (30, 2706041), (39, 2081570), (41, 1980030), (65, 1248942), (78, 1040785), (82, 990015), (123, 660010), (130, 624471), (195, 416314), (205, 396006), (246, 330005), (390, 208157), (410, 198003), (533, 152310), (615, 132002), (1066, 76155), (1230, 66001), (1599, 50770), (2665, 30462), (3198, 25385), (5077, 15990), (5330, 15231), (7995, 10154)]

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