About the Number

131686380

131686379 ← → 131686381

2進数表記:111110110010101111111101100

漢数字表記:一億三千百六十八万六千三百八十

素因数分解:

2 2 × 3 2 × 5 1 × 7 1 × 104513 1

素因数の和:104535
約数の個数: 72
約数和(自身を含む): 456517152
約数和(自身を除く): 324830772

約数列:
[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 104513, 209026, 313539, 418052, 522565, 627078, 731591, 940617, 1045130, 1254156, 1463182, 1567695, 1881234, 2090260, 2194773, 2926364, 3135390, 3657955, 3762468, 4389546, 4703085, 6270780, 6584319, 7315910, 8779092, 9406170, 10973865, 13168638, 14631820, 18812340, 21947730, 26337276, 32921595, 43895460, 65843190, 131686380]

約数ペア:
[(1, 131686380), (2, 65843190), (3, 43895460), (4, 32921595), (5, 26337276), (6, 21947730), (7, 18812340), (9, 14631820), (10, 13168638), (12, 10973865), (14, 9406170), (15, 8779092), (18, 7315910), (20, 6584319), (21, 6270780), (28, 4703085), (30, 4389546), (35, 3762468), (36, 3657955), (42, 3135390), (45, 2926364), (60, 2194773), (63, 2090260), (70, 1881234), (84, 1567695), (90, 1463182), (105, 1254156), (126, 1045130), (140, 940617), (180, 731591), (210, 627078), (252, 522565), (315, 418052), (420, 313539), (630, 209026), (1260, 104513)]

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