About the Number

21012340

21012339 ← → 21012341

2進数表記:1010000001001111101110100

漢数字表記:二千百一万二千三百四十

素因数分解:

2 2 × 5 1 × 17 1 × 23 1 × 2687 1

素因数の和:2736
約数の個数: 48
約数和(自身を含む): 48771072
約数和(自身を除く): 27758732

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, 2687, 3910, 5374, 7820, 10748, 13435, 26870, 45679, 53740, 61801, 91358, 123602, 182716, 228395, 247204, 309005, 456790, 618010, 913580, 1050617, 1236020, 2101234, 4202468, 5253085, 10506170, 21012340]

約数ペア:
[(1, 21012340), (2, 10506170), (4, 5253085), (5, 4202468), (10, 2101234), (17, 1236020), (20, 1050617), (23, 913580), (34, 618010), (46, 456790), (68, 309005), (85, 247204), (92, 228395), (115, 182716), (170, 123602), (230, 91358), (340, 61801), (391, 53740), (460, 45679), (782, 26870), (1564, 13435), (1955, 10748), (2687, 7820), (3910, 5374)]

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