About the Number

12991360

12991359 ← → 12991361

2進数表記:110001100011101110000000

漢数字表記:千二百九十九万千三百六十

素因数分解:

2 7 × 5 1 × 53 1 × 383 1

素因数の和:455
約数の個数: 64
約数和(自身を含む): 31726080
約数和(自身を除く): 18734720

約数列:
[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 53, 64, 80, 106, 128, 160, 212, 265, 320, 383, 424, 530, 640, 766, 848, 1060, 1532, 1696, 1915, 2120, 3064, 3392, 3830, 4240, 6128, 6784, 7660, 8480, 12256, 15320, 16960, 20299, 24512, 30640, 33920, 40598, 49024, 61280, 81196, 101495, 122560, 162392, 202990, 245120, 324784, 405980, 649568, 811960, 1299136, 1623920, 2598272, 3247840, 6495680, 12991360]

約数ペア:
[(1, 12991360), (2, 6495680), (4, 3247840), (5, 2598272), (8, 1623920), (10, 1299136), (16, 811960), (20, 649568), (32, 405980), (40, 324784), (53, 245120), (64, 202990), (80, 162392), (106, 122560), (128, 101495), (160, 81196), (212, 61280), (265, 49024), (320, 40598), (383, 33920), (424, 30640), (530, 24512), (640, 20299), (766, 16960), (848, 15320), (1060, 12256), (1532, 8480), (1696, 7660), (1915, 6784), (2120, 6128), (3064, 4240), (3392, 3830)]

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