About the Number

12800490

12800489 ← → 12800491

2進数表記:110000110101000111101010

漢数字表記:千二百八十万四百九十

素因数分解:

2 1 × 3 1 × 5 1 × 17 1 × 19 1 × 1321 1

素因数の和:1367
約数の個数: 64
約数和(自身を含む): 34266240
約数和(自身を除く): 21465750

約数列:
[1, 2, 3, 5, 6, 10, 15, 17, 19, 30, 34, 38, 51, 57, 85, 95, 102, 114, 170, 190, 255, 285, 323, 510, 570, 646, 969, 1321, 1615, 1938, 2642, 3230, 3963, 4845, 6605, 7926, 9690, 13210, 19815, 22457, 25099, 39630, 44914, 50198, 67371, 75297, 112285, 125495, 134742, 150594, 224570, 250990, 336855, 376485, 426683, 673710, 752970, 853366, 1280049, 2133415, 2560098, 4266830, 6400245, 12800490]

約数ペア:
[(1, 12800490), (2, 6400245), (3, 4266830), (5, 2560098), (6, 2133415), (10, 1280049), (15, 853366), (17, 752970), (19, 673710), (30, 426683), (34, 376485), (38, 336855), (51, 250990), (57, 224570), (85, 150594), (95, 134742), (102, 125495), (114, 112285), (170, 75297), (190, 67371), (255, 50198), (285, 44914), (323, 39630), (510, 25099), (570, 22457), (646, 19815), (969, 13210), (1321, 9690), (1615, 7926), (1938, 6605), (2642, 4845), (3230, 3963)]

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