About the Number

200809780

200809779 ← → 200809781

2進数表記:1011111110000001110100110100

漢数字表記:二億八十万九千七百八十

素因数分解:

2 2 × 5 1 × 17 1 × 23 1 × 25679 1

素因数の和:25728
約数の個数: 48
約数和(自身を含む): 465937920
約数和(自身を除く): 265128140

約数列:
[1, 2, 4, 5, 10, 17, 20, 23, 34, 46, 68, 85, 92, 115, 170, 230, 340, 391, 460, 782, 1564, 1955, 3910, 7820, 25679, 51358, 102716, 128395, 256790, 436543, 513580, 590617, 873086, 1181234, 1746172, 2182715, 2362468, 2953085, 4365430, 5906170, 8730860, 10040489, 11812340, 20080978, 40161956, 50202445, 100404890, 200809780]

約数ペア:
[(1, 200809780), (2, 100404890), (4, 50202445), (5, 40161956), (10, 20080978), (17, 11812340), (20, 10040489), (23, 8730860), (34, 5906170), (46, 4365430), (68, 2953085), (85, 2362468), (92, 2182715), (115, 1746172), (170, 1181234), (230, 873086), (340, 590617), (391, 513580), (460, 436543), (782, 256790), (1564, 128395), (1955, 102716), (3910, 51358), (7820, 25679)]

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